depricate ubuntu-20.04

`v1` - Remove `dotnetcli.blob.core.windows.net` storage account fallback logic and update install scripts

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @actions/virtual-environments-owners

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,22 +2,31 @@
 name: Bug report
 about: Create a bug report
 title: ''
-labels: ''
+labels: bug, needs triage
 assignees: ''
 
 ---
 
-### Description
+**Description:**
+A clear and concise description of what the bug is.
 
-<!--
+**Task version:**
-* Please share short description of the problem
+Specify the task version
-  -->
 
-### Details
+**Platform:**
+- [ ] Ubuntu
+- [ ] macOS
+- [ ] Windows
 
-<!--
+**Runner type:**
-* Include the relevant yaml, platform, and dotnet versions in use
+- [ ] Hosted
-* If an error occurred on a public action, please share a link
+- [ ] Self-hosted
-* Include any error messages received in text (search does not work for images)
+
-* Was this a regression from previous behavior?
+**Repro steps:**  
-  -->
+A description with steps to reproduce the issue. If your have a public example or repo to share, please provide the link.
+
+**Expected behavior:**
+A description of what you expected to happen.
+
+**Actual behavior:**
+A description of what is actually happening.

.github/ISSUE_TEMPLATE/config.yml

@@ -1,4 +1,4 @@
-blank_issues_enabled: true
+blank_issues_enabled: false
 contact_links:
   - name: .NET issues
     url: https://github.com/dotnet/runtime#filing-issues

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,16 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: feature request, needs triage
+assignees: ''
+---
+
+**Description:**
+Describe your proposal.
+
+**Justification:**
+Justification or a use case for your proposal.
+
+**Are you willing to submit a PR?**
+<!--- We accept contributions! -->

.github/pull_request_template.md

@@ -0,0 +1,9 @@
+**Description:**
+Describe your changes.
+
+**Related issue:**
+Add link to the related issue.
+
+**Check list:**
+- [ ] Mark if documentation changes are required.
+- [ ] Mark if tests were added or updated to cover the changes.

.github/workflows/check-dist.yml

@@ -0,0 +1,51 @@
+# `dist/index.js` is a special file in Actions.
+# When you reference an action with `uses:` in a workflow,
+# `index.js` is the code that will run.
+# For our project, we generate this file through a build process from other source files.
+# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
+name: Check dist/
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set Node.js 12.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Rebuild the dist/ directory
+        run: npm run build
+
+      - name: Compare the expected and actual dist/ directories
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build.  See status below:"
+            git diff
+            exit 1
+          fi
+        id: diff
+
+      # If index.js was different than expected, upload the expected version as an artifact
+      - uses: actions/upload-artifact@v4
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        with:
+          name: dist
+          path: dist/

.github/workflows/licensed.yml

@@ -1,8 +1,13 @@
 name: Licensed
 
 on:
-  push: {branches: main}
+  push:
-  pull_request: {branches: main}
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
 
 jobs:
   test:
@@ -14,7 +19,7 @@ jobs:
       - name: Install licensed
         run: |
           cd $RUNNER_TEMP
-          curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/2.12.2/licensed-2.12.2-linux-x64.tar.gz
+          curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/3.3.1/licensed-3.3.1-linux-x64.tar.gz
           sudo tar -xzf licensed.tar.gz
           sudo mv licensed /usr/local/bin/licensed
       - run: licensed status

.github/workflows/publish-immutable-action.yml

@@ -0,0 +1,20 @@
+name: 'Publish Immutable Action Version'
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+      packages: write
+
+    steps:
+      - name: Checking out
+        uses: actions/checkout@v4
+      - name: Publish
+        id: publish
+        uses: actions/publish-immutable-action@v0.0.4

.github/workflows/release-new-action-version.yml

@@ -0,0 +1,28 @@
+name: Release new action version
+on:
+  release:
+    types: [released]
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+env:
+  TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
+permissions:
+  contents: write
+
+jobs:
+  update_tag:
+    name: Update the major tag to include the ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }} changes
+    environment:
+      name: releaseNewActionVersion
+    runs-on: ubuntu-latest
+    steps:
+    - name: Update the ${{ env.TAG_NAME }} tag
+      id: update-major-tag
+      uses: actions/publish-action@v0.1.0
+      with:
+        source-tag: ${{ env.TAG_NAME }}
+        slack-webhook: ${{ secrets.SLACK_WEBHOOK }}

.github/workflows/test-dotnet.yml

@@ -0,0 +1,37 @@
+name: Validate dotnet
+
+on:
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  push:
+    branches:
+      - main
+      - releases/*
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  setup-version:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-22.04, windows-latest, macOS-latest]
+        dotnet-version: ['2.1', '2.2', '3.0', '3.1', '5.0']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet ${{ matrix.dotnet-version }}
+        uses: ./
+        with:
+          dotnet-version: ${{ matrix.dotnet-version }}
+      - name: Check installed version
+        shell: pwsh
+        run: |
+          $version = & dotnet --version
+          Write-Host "Installed version: $version"
+          if (-not $version.StartsWith("${{ matrix.dotnet-version }}")) { throw "Unexpected version" }

.github/workflows/workflow.yml

@@ -2,10 +2,14 @@ name: Main workflow
 
 on:
   pull_request:
+    paths-ignore:
+      - '**.md'
   push:
     branches:
       - main
       - releases/*
+    paths-ignore:
+      - '**.md'
 
 jobs:
   build:
@@ -13,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+        operating-system: [ubuntu-22.04, windows-latest, macos-13]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -29,34 +33,41 @@ jobs:
       if: runner.os != 'windows'
       run: __tests__/verify-no-unstaged-changes.sh
   
-  test:
+  test-setup-multiple-versions:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+        operating-system: [ubuntu-22.04, windows-latest, macOS-latest]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-      - name: Clear tool cache (macOS)
+      - name: Clear toolcache
-        if: runner.os == 'macos'
+        shell: pwsh
-        run: |
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
-          echo $PATH
+      - name: Setup dotnet 2.2.402 and 3.1.404
-          dotnet --info
+        uses: ./
-          rm -rf "/Users/runner/.dotnet"
+        with:
-      - name: Clear tool cache (Ubuntu)
+          dotnet-version: |
-        if: runner.os == 'linux'
+             2.2.402
-        run: |
+             3.1.404
-          echo $PATH
+             3.0.x
-          dotnet --info
+      - name: Verify dotnet
-          rm -rf "/usr/share/dotnet"
+        shell: pwsh
-      - name: Clear tool cache (Windows)
+        run: __tests__/verify-dotnet.ps1 2.2.402 3.1.404 '3.0'
-        if: runner.os == 'windows'
+
-        run: |
+  test-setup-full-version:
-          echo $env:PATH
+    runs-on: ${{ matrix.operating-system }}
-          dotnet --info
+    strategy:
-          Remove-Item $env:LocalAppData\Microsoft\dotnet/*  -Recurse -Force -ErrorAction SilentlyContinue
+      fail-fast: false
-          Remove-Item "$env:ProgramFiles\dotnet/*"  -Recurse -Force -ErrorAction SilentlyContinue
+      matrix:
+        operating-system: [ubuntu-22.04, windows-latest, macos-13]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
       # Side-by-side install of 2.2 and 3.1 used for the test project
       - name: Setup dotnet 2.2.402
         uses: ./
@@ -70,26 +81,102 @@ jobs:
           source-url: https://api.nuget.org/v3/index.json
         env:
           NUGET_AUTH_TOKEN: NOTATOKEN
+      - name: Verify nuget config file
+        shell: pwsh
+        run: |
+          if (-Not (Test-Path "../nuget.config")) { throw "nuget file not generated correctly" }
       - name: Verify dotnet
-        if: runner.os != 'windows'
+        shell: pwsh
-        run: __tests__/verify-dotnet.sh 3.1.201 2.2.402
+        run: __tests__/verify-dotnet.ps1 3.1.201 2.2.402
-      - name: Verify dotnet (Windows)
+
-        if: runner.os == 'windows'
+  test-setup-without-patch-version:
-        run: __tests__/verify-dotnet.ps1 3.1.201
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-22.04, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      # 2.0, 3.0, 5.0 needs to be in single quotes to interpret as a string instead of as an integer
+      - name: Setup dotnet '3.1'
+        uses: ./
+        with:
+          dotnet-version: '3.1'
+      - name: Setup dotnet '2.2'
+        uses: ./
+        with:
+          dotnet-version: '2.2'
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 3.1 2.2
+  
+  test-setup-latest-patch-version:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-22.04, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet 3.1.x
+        uses: ./
+        with:
+          dotnet-version: 3.1.x
+      - name: Setup dotnet 2.2.x
+        uses: ./
+        with:
+          dotnet-version: 2.2.x
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 3.1 2.2
+
+  test-setup-with-wildcard:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-22.04, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet 3.1.*
+        uses: ./
+        with:
+          dotnet-version: 3.1.*
+      - name: Setup dotnet 2.2.*
+        uses: ./
+        with:
+          dotnet-version: 2.2.*
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 3.1 2.2
 
   test-proxy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     container:
-      image: mcr.microsoft.com/dotnet/core/runtime-deps:3.0-bionic
+      image: ubuntu:22.04
       options: --dns 127.0.0.1
     services:
       squid-proxy:
-        image: datadog/squid:latest
+        image: ubuntu/squid:latest
         ports:
           - 3128:3128
     env:
       https_proxy: http://squid-proxy:3128
       http_proxy: http://squid-proxy:3128
+      DOTNET_SYSTEM_GLOBALIZATION_INVARIANT: true
+
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -98,7 +185,7 @@ jobs:
       - name: Install curl
         run: |
           apt update
-          apt -y install curl
+          apt -y install curl libssl-dev
       - name: Setup dotnet 3.1.201
         uses: ./
         with:
@@ -110,10 +197,10 @@ jobs:
         run: __tests__/verify-dotnet.sh 3.1.201
 
   test-bypass-proxy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       https_proxy: http://no-such-proxy:3128
-      no_proxy: github.com,dotnetcli.blob.core.windows.net,download.visualstudio.microsoft.com,api.nuget.org,dotnetcli.azureedge.net
+      no_proxy: github.com,download.visualstudio.microsoft.com,api.nuget.org,builds.dotnet.microsoft.com,ci.dot.net
     steps:
       - name: Checkout
         uses: actions/checkout@v2

.licenses/npm/@actions/core.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/core"
-version: 1.2.5
+version: 1.6.0
 type: npm
 summary: Actions core lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/core

.licenses/npm/@actions/http-client-1.0.11.dep.yml

@@ -0,0 +1,32 @@
+---
+name: "@actions/http-client"
+version: 1.0.11
+type: npm
+summary: Actions Http Client
+homepage: https://github.com/actions/http-client#readme
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    Actions Http Client for Node.js
+
+    Copyright (c) GitHub, Inc.
+
+    All rights reserved.
+
+    MIT License
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+    associated documentation files (the "Software"), to deal in the Software without restriction,
+    including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+    subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+    LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+    NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+notices: []

README.md

@@ -4,16 +4,16 @@
   <a href="https://github.com/actions/setup-dotnet"><img alt="GitHub Actions status" src="https://github.com/actions/setup-dotnet/workflows/Main%20workflow/badge.svg"></a>
 </p>
 
-This action sets up a [dotnet core cli](https://github.com/dotnet/cli) environment for use in actions by:
+This action sets up a [.NET CLI](https://github.com/dotnet/sdk) environment for use in actions by:
 
-- optionally downloading and caching a version of dotnet by SDK version and adding to PATH
+- optionally downloading and caching a version(s) of dotnet by SDK version(s) and adding to PATH
 - registering problem matchers for error output
 - setting up authentication to private package sources like GitHub Packages
 
 Please Note: GitHub hosted runners have some versions of the .NET SDK
 preinstalled. Installed versions are subject to change. Please refer to the
 documentation
-[software installed on github hosted runners](https://help.github.com/en/actions/reference/software-installed-on-github-hosted-runners)
+[software installed on github hosted runners](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-software)
 for .NET SDK versions that are currently available.
 
 # Usage
@@ -23,12 +23,36 @@ See [action.yml](action.yml)
 Basic:
 ```yaml
 steps:
-- uses: actions/checkout@main
+- uses: actions/checkout@v2
 - uses: actions/setup-dotnet@v1
   with:
     dotnet-version: '3.1.x' # SDK Version to use; x will use the latest version of the 3.1 channel
 - run: dotnet build <my project>
 ```
+Multiple versions:
+> Note: In case multiple versions are installed, the latest .NET version will be used by default unless another version is specified in the `global.json` file.
+
+```yml
+steps:
+- uses: actions/checkout@v2
+- name: Setup dotnet
+  uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: | 
+      3.1.x
+      5.0.x
+- run: dotnet build <my project>
+```
+Preview version:
+```yml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: '6.0.x'
+    include-prerelease: true
+- run: dotnet build <my project>
+```
 
 Matrix Testing:
 ```yaml
@@ -37,7 +61,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        dotnet: [ '2.2.103', '3.0', '3.1.x' ]
+        dotnet: [ '2.1.x', '3.1.x', '5.0.x' ]
     name: Dotnet ${{ matrix.dotnet }} sample
     steps:
       - uses: actions/checkout@v2
@@ -59,7 +83,7 @@ jobs:
       - name: Setup dotnet
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: '2.2.103'
+          dotnet-version: '2.1.x'
       - name: Setup dotnet
         uses: actions/setup-dotnet@v1
         with:
@@ -85,7 +109,7 @@ steps:
 - name: Publish the package to GPR
   run: dotnet nuget push <my project>/bin/Release/*.nupkg
 
-# Authticates packages to push to Azure Artifacts
+# Authenticates packages to push to Azure Artifacts
 - uses: actions/setup-dotnet@v1
   with:
     source-url: https://pkgs.dev.azure.com/<your-organization>/_packaging/<your-feed-name>/nuget/v3/index.json
@@ -93,11 +117,21 @@ steps:
     NUGET_AUTH_TOKEN: ${{secrets.AZURE_DEVOPS_PAT}} # Note, create a secret with this name in Settings
 - name: Publish the package to Azure Artifacts
   run: dotnet nuget push <my project>/bin/Release/*.nupkg
+
+# Authenticates packages to push to nuget.org.
+# It's only the way to push a package to nuget.org feed for macOS/Linux machines due to API key config store limitations.
+- uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: 3.1.x
+- name: Publish the package to nuget.org
+  run: dotnet nuget push */bin/Release/*.nupkg -k $NUGET_AUTH_TOKEN -s https://api.nuget.org/v3/index.json
+  env:
+    NUGET_AUTH_TOKEN: ${{ secrets.NUGET_TOKEN }}
 ```
 
 ## Environment Variables to use with dotnet
 
-Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet#environment-variables
+Some environment variables may be necessary for your particular case or to improve logging. Some examples are listed below, but the full list with complete details can be found here: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-environment-variables
 
 - DOTNET_NOLOGO - removes logo and telemetry message from first run of dotnet cli (default: false)
 - DOTNET_CLI_TELEMETRY_OPTOUT - opt-out of telemetry being sent to Microsoft (default: false)
@@ -113,7 +147,7 @@ build:
     - uses: actions/checkout@main
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.1.100' # SDK Version to use.
+        dotnet-version: '3.1.x' # SDK Version to use.
 ```
 
 # License

__tests__/clear-toolcache.ps1

@@ -0,0 +1,13 @@
+$dotnetPaths = @{
+    Linux = "/usr/share/dotnet"
+    macOS = "$env:HOME/.dotnet"
+    Windows = "$env:ProgramFiles\dotnet", "$env:LocalAppData\Microsoft\dotnet"
+}
+
+foreach ($srcPath in $dotnetPaths[$args[0]]) {
+    if (Test-Path $srcPath) {
+        Write-Host "Move $srcPath path"
+        $dstPath = Join-Path ([IO.Path]::GetTempPath()) ([IO.Path]::GetRandomFileName())
+        Move-Item -Path $srcPath -Destination $dstPath
+    }
+}

__tests__/installer.test.ts

@@ -4,79 +4,21 @@ import os = require('os');
 import path = require('path');
 import hc = require('@actions/http-client');
 
-import each from 'jest-each';
-
 const toolDir = path.join(__dirname, 'runner', 'tools');
 const tempDir = path.join(__dirname, 'runner', 'temp');
 
 process.env['RUNNER_TOOL_CACHE'] = toolDir;
 process.env['RUNNER_TEMP'] = tempDir;
-import * as setup from '../src/setup-dotnet';
 import * as installer from '../src/installer';
 
 const IS_WINDOWS = process.platform === 'win32';
 
-describe('version tests', () => {
-  each(['3.1.999', '3.1.101-preview.3']).test(
-    "Exact version '%s' should be the same",
-    vers => {
-      let versInfo = new installer.DotNetVersionInfo(vers);
-
-      expect(versInfo.isExactVersion()).toBe(true);
-      expect(versInfo.version()).toBe(vers);
-    }
-  );
-
-  each([
-    ['3.1.x', '3.1'],
-    ['1.1.*', '1.1'],
-    ['2.0', '2.0']
-  ]).test("Generic version '%s' should be '%s'", (vers, resVers) => {
-    let versInfo = new installer.DotNetVersionInfo(vers);
-
-    expect(versInfo.isExactVersion()).toBe(false);
-    expect(versInfo.version()).toBe(resVers);
-  });
-
-  each([
-    '',
-    '.',
-    '..',
-    ' . ',
-    '. ',
-    ' .',
-    ' . . ',
-    ' .. ',
-    ' .  ',
-    '-1.-1',
-    '-1',
-    '-1.-1.-1',
-    '..3',
-    '1..3',
-    '1..',
-    '.2.3',
-    '.2.x',
-    '1',
-    '2.x',
-    '*.*.1',
-    '*.1',
-    '*.',
-    '1.2.',
-    '1.2.-abc',
-    'a.b',
-    'a.b.c',
-    'a.b.c-preview',
-    ' 0 . 1 . 2 '
-  ]).test("Malformed version '%s' should throw", vers => {
-    expect(() => new installer.DotNetVersionInfo(vers)).toThrow();
-  });
-});
-
 describe('installer tests', () => {
   beforeAll(async () => {
     process.env.RUNNER_TOOL_CACHE = toolDir;
     process.env.DOTNET_INSTALL_DIR = toolDir;
     process.env.RUNNER_TEMP = tempDir;
+    process.env.DOTNET_ROOT = '';
     await io.rmRF(toolDir);
     await io.rmRF(tempDir);
   });
@@ -90,46 +32,26 @@ describe('installer tests', () => {
     }
   }, 30000);
 
-  it('Resolving a normal generic version works', async () => {
+  it('Aquires multiple versions of dotnet', async () => {
-    const dotnetInstaller = new installer.DotnetCoreInstaller('3.1.x');
+    const versions = ['2.2.207', '3.1.120'];
-    let versInfo = await dotnetInstaller.resolveVersion(
-      new installer.DotNetVersionInfo('3.1.x')
-    );
 
-    expect(versInfo.startsWith('3.1.'));
+    for (const version of versions) {
-  }, 100000);
+      await getDotnet(version);
-
-  it('Resolving a nonexistent generic version fails', async () => {
-    const dotnetInstaller = new installer.DotnetCoreInstaller('999.1.x');
-    try {
-      await dotnetInstaller.resolveVersion(
-        new installer.DotNetVersionInfo('999.1.x')
-      );
-      fail();
-    } catch {
-      expect(true);
     }
-  }, 100000);
+    expect(fs.existsSync(path.join(toolDir, 'sdk', '2.2.207'))).toBe(true);
+    expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.120'))).toBe(true);
 
-  it('Resolving a exact stable version works', async () => {
+    if (IS_WINDOWS) {
-    const dotnetInstaller = new installer.DotnetCoreInstaller('3.1.201');
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
-    let versInfo = await dotnetInstaller.resolveVersion(
+    } else {
-      new installer.DotNetVersionInfo('3.1.201')
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
-    );
+    }
 
-    expect(versInfo).toBe('3.1.201');
+    expect(process.env.DOTNET_ROOT).toBeDefined;
-  }, 100000);
+    expect(process.env.PATH).toBeDefined;
-
+    expect(process.env.DOTNET_ROOT).toBe(toolDir);
-  it('Resolving a exact preview version works', async () => {
+    expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
-    const dotnetInstaller = new installer.DotnetCoreInstaller(
+  }, 600000);
-      '5.0.0-preview.6'
-    );
-    let versInfo = await dotnetInstaller.resolveVersion(
-      new installer.DotNetVersionInfo('5.0.0-preview.6')
-    );
-
-    expect(versInfo).toBe('5.0.0-preview.6');
-  }, 100000);
 
   it('Acquires version of dotnet if no matching version is installed', async () => {
     await getDotnet('3.1.201');
@@ -139,24 +61,30 @@ describe('installer tests', () => {
     } else {
       expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
     }
-  }, 400000); //This needs some time to download on "slower" internet connections
 
-  it('Acquires version of dotnet from global.json if no matching version is installed', async () => {
+    expect(process.env.DOTNET_ROOT).toBeDefined;
-    const globalJsonPath = path.join(process.cwd(), 'global.json');
+    expect(process.env.PATH).toBeDefined;
-    const jsonContents = `{${os.EOL}"sdk": {${os.EOL}"version": "3.1.201"${os.EOL}}${os.EOL}}`;
+    expect(process.env.DOTNET_ROOT).toBe(toolDir);
-    if (!fs.existsSync(globalJsonPath)) {
+    expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
-      fs.writeFileSync(globalJsonPath, jsonContents);
+  }, 600000); //This needs some time to download on "slower" internet connections
-    }
-    await setup.run();
 
-    expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.201'))).toBe(true);
+  it('Acquires generic version of dotnet if no matching version is installed', async () => {
+    await getDotnet('3.1');
+    var directory = fs
+      .readdirSync(path.join(toolDir, 'sdk'))
+      .filter(fn => fn.startsWith('3.1.'));
+    expect(directory.length > 0).toBe(true);
     if (IS_WINDOWS) {
       expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
     } else {
       expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
     }
-    fs.unlinkSync(globalJsonPath);
+
-  }, 100000);
+    expect(process.env.DOTNET_ROOT).toBeDefined;
+    expect(process.env.PATH).toBeDefined;
+    expect(process.env.DOTNET_ROOT).toBe(toolDir);
+    expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
+  }, 600000); //This needs some time to download on "slower" internet connections
 
   it('Throws if no location contains correct dotnet version', async () => {
     let thrown = false;
@@ -219,4 +147,5 @@ function normalizeFileContents(contents: string): string {
 async function getDotnet(version: string): Promise<void> {
   const dotnetInstaller = new installer.DotnetCoreInstaller(version);
   await dotnetInstaller.installDotnet();
+  installer.DotnetCoreInstaller.addToPath();
 }

__tests__/sample-csproj/sample.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;netcoreapp2.2</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;netcoreapp3.0;netcoreapp2.2</TargetFrameworks>
     <RootNamespace>sample_csproj</RootNamespace>
 
     <IsPackable>false</IsPackable>

__tests__/setup-dotnet.test.ts

@@ -7,6 +7,7 @@ const toolDir = path.join(__dirname, 'runner', 'tools2');
 const tempDir = path.join(__dirname, 'runner', 'temp2');
 
 import * as setup from '../src/setup-dotnet';
+import * as dotnetInstaller from '../src/installer';
 
 const IS_WINDOWS = process.platform === 'win32';
 
@@ -19,7 +20,7 @@ describe('setup-dotnet tests', () => {
     await io.rmRF(tempDir);
   });
 
-  afterAll(async () => {
+  afterEach(async () => {
     try {
       await io.rmRF(path.join(process.cwd(), 'global.json'));
       await io.rmRF(toolDir);
@@ -29,7 +30,7 @@ describe('setup-dotnet tests', () => {
     }
   }, 30000);
 
-  it('Acquires version of dotnet if no matching version is installed', async () => {
+  it('Acquires version of dotnet from global.json if no matching version is installed', async () => {
     const globalJsonPath = path.join(process.cwd(), 'global.json');
     const jsonContents = `{${os.EOL}"sdk": {${os.EOL}"version": "3.1.201"${os.EOL}}${os.EOL}}`;
     if (!fs.existsSync(globalJsonPath)) {
@@ -43,6 +44,27 @@ describe('setup-dotnet tests', () => {
     } else {
       expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
     }
-    fs.unlinkSync(globalJsonPath);
+  }, 400000);
-  }, 100000);
+
+  it('Acquires version of dotnet from global.json with rollForward option, install the latest patch', async () => {
+    const globalJsonPath = path.join(process.cwd(), 'global.json');
+    const jsonContents = `{${os.EOL}"sdk": {${os.EOL}"version":"3.1.201",${os.EOL}"rollForward":"latestFeature"${os.EOL}}${os.EOL}}`;
+    if (!fs.existsSync(globalJsonPath)) {
+      fs.writeFileSync(globalJsonPath, jsonContents);
+    }
+
+    const version = '3.1';
+    const installer = new dotnetInstaller.DotnetCoreInstaller(version);
+    const patchVersion = await installer.resolveVersion(
+      new dotnetInstaller.DotNetVersionInfo(version)
+    );
+    await setup.run();
+
+    expect(fs.existsSync(path.join(toolDir, 'sdk', patchVersion))).toBe(true);
+    if (IS_WINDOWS) {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
+    } else {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
+    }
+  }, 400000);
 });

__tests__/verify-dotnet.ps1

@@ -3,30 +3,38 @@ if (!$args[0])
   throw "Must supply dotnet version argument"
 }
 
-if (-Not (Test-Path "../nuget.config"))
-{
-  throw "nuget file not generated correctly"
-}
-
 $dotnet = Get-Command dotnet | Select-Object -First 1 | ForEach-Object { $_.Path }
 Write-Host "Found '$dotnet'"
 
+if($args.count -eq 1)
+{
   $version = & $dotnet --version | Out-String | ForEach-Object { $_.Trim() }
   Write-Host "Version $version"
-if ($version -ne $args[0])
+  if (-not ($version.StartsWith($args[0].ToString())))
   {
-  Write-Host "PATH='$env:path'"
+    Write-Host "PATH='$env:PATH'"
     throw "Unexpected version"
   }
+}
 
 if ($args[1])
 {
   # SDKs are listed on multiple lines with the path afterwards in square brackets
-  $version = & $dotnet --list-sdks | ForEach-Object { $_.SubString(0, $_.IndexOf('[')).Trim() }
+  $versions = & $dotnet --list-sdks | ForEach-Object { $_.SubString(0, $_.IndexOf('[')).Trim() }
-  Write-Host "Version $version"
+  Write-Host "Installed versions: $versions"
-  if (-not ($version -contains $args[1]))
+  $InstalledVersionCount = 0
+  foreach($arg in $args){
+    foreach ($version in $versions)
     {
-    Write-Host "PATH='$env:path'"
+      if ($version.StartsWith($arg.ToString())) 
+      {
+        $InstalledVersionCount++
+      }
+    }
+   }
+  if ( $InstalledVersionCount -ne $args.Count)
+  {
+    Write-Host "PATH='$env:PATH'"
     throw "Unexpected version"
   }
 }
@@ -49,6 +57,13 @@ if ($args[1])
     throw "Unexpected output"
   }
 }
+if ($args[2])
+{
+  if ($sample_output -notlike "*Test Run Successful.*Test Run Successful.*Test Run Successful.*")
+  {
+    throw "Unexpected output"
+  }
+}
 else
 {
   if ($sample_output -notlike "*Test Run Successful.*")

__tests__/versionutil.test.ts

@@ -0,0 +1,91 @@
+import each from 'jest-each';
+import * as installer from '../src/installer';
+
+describe('version tests', () => {
+  each(['3.1.999', '3.1.101-preview.3']).test(
+    "Exact version '%s' should be the same",
+    vers => {
+      let versInfo = new installer.DotNetVersionInfo(vers);
+
+      expect(versInfo.isExactVersion()).toBe(true);
+      expect(versInfo.version()).toBe(vers);
+    }
+  );
+
+  each([
+    ['3.x', '3.x'],
+    ['3.*', '3.*'],
+    ['3.1.x', '3.1'],
+    ['1.1.*', '1.1'],
+    ['2.0', '2.0']
+  ]).test("Generic version '%s' should be '%s'", (vers, resVers) => {
+    let versInfo = new installer.DotNetVersionInfo(vers);
+
+    expect(versInfo.isExactVersion()).toBe(false);
+    expect(versInfo.version()).toBe(resVers);
+  });
+
+  each([
+    '',
+    '.',
+    '..',
+    ' . ',
+    '. ',
+    ' .',
+    ' . . ',
+    ' .. ',
+    ' .  ',
+    '-1.-1',
+    '-1',
+    '-1.-1.-1',
+    '..3',
+    '1..3',
+    '1..',
+    '.2.3',
+    '.2.x',
+    '1',
+    '*.*.1',
+    '*.1',
+    '*.',
+    '1.2.',
+    '1.2.-abc',
+    'a.b',
+    'a.b.c',
+    'a.b.c-preview',
+    ' 0 . 1 . 2 '
+  ]).test("Malformed version '%s' should throw", vers => {
+    expect(() => new installer.DotNetVersionInfo(vers)).toThrow();
+  });
+
+  each([
+    ['3.1.x', '3.1.'],
+    ['3.1.*', '3.1.'],
+    ['3.1', '3.1.'],
+    ['5.0.0-preview.6', '5.0.0-preview.6'],
+    ['3.1.201', '3.1.201']
+  ]).test(
+    "Resolving version '%s' as '%s'",
+    async (input, expectedVersion) => {
+      const dotnetInstaller = new installer.DotnetCoreInstaller(input);
+      let versInfo = await dotnetInstaller.resolveVersion(
+        new installer.DotNetVersionInfo(input)
+      );
+      console.log(versInfo);
+
+      expect(versInfo.startsWith(expectedVersion));
+    },
+    100000
+  );
+
+  it('Resolving a nonexistent generic version fails', async () => {
+    const dotnetInstaller = new installer.DotnetCoreInstaller('999.1.x');
+    try {
+      await dotnetInstaller.resolveVersion(
+        new installer.DotNetVersionInfo('999.1.x')
+      );
+      fail();
+    } catch {
+      expect(true);
+    }
+  }, 100000);
+});

action.yml

@@ -1,18 +1,21 @@
 name: 'Setup .NET Core SDK'
-description: 'Set up a specific version of the .NET Core CLI in the PATH and set up authentication to a private NuGet repository'
+description: 'Used to build and publish .NET source. Set up a specific version of the .NET and authentication to private NuGet repository'
 author: 'GitHub'
 branding:
   icon: play
   color: green
 inputs:
   dotnet-version:
-    description: 'SDK version to use. Examples: 2.2.104, 3.1, 3.1.x'
+    description: 'Optional SDK version(s) to use. If not provided, will install global.json version when available. Examples: 2.2.104, 3.1, 3.1.x'
   source-url:
     description: 'Optional package source for which to set up authentication. Will consult any existing NuGet.config in the root of the repo and provide a temporary NuGet.config using the NUGET_AUTH_TOKEN environment variable as a ClearTextPassword'
   owner:
     description: 'Optional OWNER for using packages from GitHub Package Registry organizations/users other than the current repository''s owner. Only used if a GPR URL is also provided in source-url'
   config-file:
     description: 'Optional NuGet.config location, if your NuGet.config isn''t located in the root of the repo.'
+  include-prerelease:
+    description: 'Whether prerelease versions should be matched with non-exact versions (for example 5.0.0-preview.6 being matched by 5, 5.0, 5.x or 5.0.x). Defaults to false if not provided.'
+    required: False
 runs:
   using: 'node12'
   main: 'dist/index.js'

docs/contributors.md

@@ -22,3 +22,13 @@ If you would like to contribute there are a few things to consider:
 ## Writing tests
 
 With any contribution please take time to consider how this can be tested to maintain high quality. Current tests can be found in the folder __tests__ for examples.
+
+## Creating new version
+
+Details on versioning can be found here: https://github.com/actions/toolkit/blob/main/docs/action-versioning.md
+Create a new release using the UI. Version format should be `v1.x.x`. Creating a new major version requires reaction from users and should be done only with breaking changes.
+Once the new release is created, the v1 tag needs to be updated as well.
+```
+git tag -fa v1 -m "Update v1 tag"
+git push origin v1 --force
+```

package.json

@@ -30,7 +30,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.5",
+    "@actions/core": "^1.6.0",
     "@actions/exec": "^1.0.4",
     "@actions/github": "^1.1.0",
     "@actions/http-client": "^1.0.8",
@@ -40,15 +40,15 @@
     "xmlbuilder": "^13.0.2"
   },
   "devDependencies": {
-    "@types/jest": "^25.2.3",
+    "@types/jest": "^27.0.2",
     "@types/node": "^12.12.62",
     "@types/semver": "^6.2.2",
     "@zeit/ncc": "^0.21.1",
-    "husky": "^4.3.0",
+    "husky": "^7.0.2",
-    "jest": "^26.4.2",
+    "jest": "^27.2.5",
-    "jest-circus": "^26.4.2",
+    "jest-circus": "^27.2.5",
     "prettier": "^1.19.1",
-    "ts-jest": "^26.4.0",
+    "ts-jest": "^27.0.5",
     "typescript": "^3.9.7",
     "wget-improved": "^3.2.1"
   },

src/authutil.ts

@@ -13,7 +13,9 @@ export function configAuthentication(
 ) {
   const existingNuGetConfig: string = path.resolve(
     processRoot,
-    existingFileLocation == '' ? 'nuget.config' : existingFileLocation
+    existingFileLocation === ''
+      ? getExistingNugetConfig(processRoot)
+      : existingFileLocation
   );
 
   const tempNuGetConfig: string = path.resolve(
@@ -25,6 +27,21 @@ export function configAuthentication(
   writeFeedToFile(feedUrl, existingNuGetConfig, tempNuGetConfig);
 }
 
+function isValidKey(key: string): boolean {
+  return /^[\w\-\.]+$/i.test(key);
+}
+
+function getExistingNugetConfig(processRoot: string) {
+  const defaultConfigName = 'nuget.config';
+  const configFileNames = fs
+    .readdirSync(processRoot)
+    .filter(filename => filename.toLowerCase() === defaultConfigName);
+  if (configFileNames.length) {
+    return configFileNames[0];
+  }
+  return defaultConfigName;
+}
+
 function writeFeedToFile(
   feedUrl: string,
   existingFileLocation: string,
@@ -109,9 +126,9 @@ function writeFeedToFile(
   xml = xml.ele('packageSourceCredentials');
 
   sourceKeys.forEach(key => {
-    if (key.indexOf(' ') > -1) {
+    if (!isValidKey(key)) {
       throw new Error(
-        "This action currently can't handle source names with spaces. Remove the space from your repo's NuGet.config and try again."
+        "Source name can contain letters, numbers, and '-', '_', '.' symbols only. Please, fix source name in NuGet.config and try again."
       );
     }
 

src/installer.ts

@@ -29,8 +29,7 @@ export class DotNetVersionInfo {
       return;
     }
 
-    //Note: No support for previews when using generic
+    const parts: string[] = version.split('.');
-    let parts: string[] = version.split('.');
 
     if (parts.length < 2 || parts.length > 3) this.throwInvalidVersionFormat();
 
@@ -38,8 +37,10 @@ export class DotNetVersionInfo {
       this.throwInvalidVersionFormat();
     }
 
-    let major = this.getVersionNumberOrThrow(parts[0]);
+    const major = this.getVersionNumberOrThrow(parts[0]);
-    let minor = this.getVersionNumberOrThrow(parts[1]);
+    const minor = ['x', '*'].includes(parts[1])
+      ? parts[1]
+      : this.getVersionNumberOrThrow(parts[1]);
 
     this.fullversion = major + '.' + minor;
   }
@@ -60,7 +61,9 @@ export class DotNetVersionInfo {
   }
 
   private throwInvalidVersionFormat() {
-    throw 'Invalid version format! Supported: 1.2.3, 1.2, 1.2.x, 1.2.*';
+    throw new Error(
+      'Invalid version format! Supported: 1.2.3, 1.2, 1.2.x, 1.2.*'
+    );
   }
 
   /**
@@ -76,8 +79,9 @@ export class DotNetVersionInfo {
 }
 
 export class DotnetCoreInstaller {
-  constructor(version: string) {
+  constructor(version: string, includePrerelease: boolean = false) {
     this.version = version;
+    this.includePrerelease = includePrerelease;
   }
 
   public async installDotnet() {
@@ -146,8 +150,8 @@ export class DotnetCoreInstaller {
       const scriptPath = await io.which(escapedScript, true);
 
       let scriptArguments: string[] = [];
-      if (this.version) {
+      if (calculatedVersion) {
-        scriptArguments.push('--version', this.version);
+        scriptArguments.push('--version', calculatedVersion);
       }
 
       // process.env must be explicitly passed in for DOTNET_INSTALL_DIR to be used
@@ -161,8 +165,15 @@ export class DotnetCoreInstaller {
       });
     }
 
+    if (resultCode != 0) {
+      throw new Error(`Failed to install dotnet ${resultCode}. ${output}`);
+    }
+  }
+
+  static addToPath() {
     if (process.env['DOTNET_INSTALL_DIR']) {
       core.addPath(process.env['DOTNET_INSTALL_DIR']);
+      core.exportVariable('DOTNET_ROOT', process.env['DOTNET_INSTALL_DIR']);
     } else {
       if (IS_WINDOWS) {
         // This is the default set in install-dotnet.ps1
@@ -176,14 +187,14 @@ export class DotnetCoreInstaller {
       } else {
         // This is the default set in install-dotnet.sh
         core.addPath(path.join(process.env['HOME'] + '', '.dotnet'));
+        core.exportVariable(
+          'DOTNET_ROOT',
+          path.join(process.env['HOME'] + '', '.dotnet')
+        );
       }
     }
 
     console.log(process.env['PATH']);
-
-    if (resultCode != 0) {
-      throw `Failed to install dotnet ${resultCode}. ${output}`;
-    }
   }
 
   // versionInfo - versionInfo of the SDK/Runtime
@@ -207,13 +218,15 @@ export class DotnetCoreInstaller {
     let releasesInfo: any[] = releasesResult['releases'];
     releasesInfo = releasesInfo.filter((releaseInfo: any) => {
       return (
-        semver.satisfies(
+        semver.satisfies(releaseInfo['sdk']['version'], versionInfo.version(), {
-          releaseInfo['sdk']['version'],
+          includePrerelease: this.includePrerelease
-          versionInfo.version()
+        }) ||
-        ) ||
         semver.satisfies(
           releaseInfo['sdk']['version-display'],
-          versionInfo.version()
+          versionInfo.version(),
+          {
+            includePrerelease: this.includePrerelease
+          }
         )
       );
     });
@@ -222,16 +235,22 @@ export class DotnetCoreInstaller {
     let latestSdk: string = releasesResult['latest-sdk'];
 
     releasesInfo = releasesInfo.filter((releaseInfo: any) =>
-      semver.lte(releaseInfo['sdk']['version'], latestSdk)
+      semver.lte(releaseInfo['sdk']['version'], latestSdk, {
+        includePrerelease: this.includePrerelease
+      })
     );
 
     // Sort for latest version
     releasesInfo = releasesInfo.sort((a, b) =>
-      semver.rcompare(a['sdk']['version'], b['sdk']['version'])
+      semver.rcompare(a['sdk']['version'], b['sdk']['version'], {
+        includePrerelease: this.includePrerelease
+      })
     );
 
     if (releasesInfo.length == 0) {
-      throw `Could not find dotnet core version. Please ensure that specified version ${versionInfo.inputVersion} is valid.`;
+      throw new Error(
+        `Could not find dotnet core version. Please ensure that specified version ${versionInfo.inputVersion} is valid.`
+      );
     }
 
     let release = releasesInfo[0];
@@ -245,24 +264,40 @@ export class DotnetCoreInstaller {
     const response = await httpClient.getJson<any>(DotNetCoreIndexUrl);
     const result = response.result || {};
     let releasesInfo: any[] = result['releases-index'];
+
     releasesInfo = releasesInfo.filter((info: any) => {
       // channel-version is the first 2 elements of the version (e.g. 2.1), filter out versions that don't match 2.1.x.
       const sdkParts: string[] = info['channel-version'].split('.');
-      if (versionParts.length >= 2 && versionParts[1] != 'x') {
+      if (
+        versionParts.length >= 2 &&
+        !(versionParts[1] == 'x' || versionParts[1] == '*')
+      ) {
         return versionParts[0] == sdkParts[0] && versionParts[1] == sdkParts[1];
       }
       return versionParts[0] == sdkParts[0];
     });
+
     if (releasesInfo.length === 0) {
-      throw `Could not find info for version ${versionParts.join(
+      throw new Error(
+        `Could not find info for version ${versionParts.join(
           '.'
-      )} at ${DotNetCoreIndexUrl}`;
+        )} at ${DotNetCoreIndexUrl}`
+      );
     }
-    return releasesInfo[0]['releases.json'];
+
+    const releaseInfo = releasesInfo[0];
+    if (releaseInfo['support-phase'] === 'eol') {
+      core.warning(
+        `${releaseInfo['product']} ${releaseInfo['channel-version']} is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.`
+      );
+    }
+
+    return releaseInfo['releases.json'];
   }
 
   private version: string;
+  private includePrerelease: boolean;
 }
 
 const DotNetCoreIndexUrl: string =
-  'https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/releases-index.json';
+  'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';

src/setup-dotnet.ts

@@ -13,25 +13,30 @@ export async function run() {
     // If a valid version still can't be identified, nothing will be installed.
     // Proxy, auth, (etc) are still set up, even if no version is identified
     //
-    let version = core.getInput('dotnet-version');
+    let versions = core.getMultilineInput('dotnet-version');
-    if (!version) {
+    if (!versions.length) {
       // Try to fall back to global.json
       core.debug('No version found, trying to find version from global.json');
       const globalJsonPath = path.join(process.cwd(), 'global.json');
       if (fs.existsSync(globalJsonPath)) {
-        const globalJson = JSON.parse(
+        versions.push(getVersionFromGlobalJson(globalJsonPath));
-          fs.readFileSync(globalJsonPath, {encoding: 'utf8'})
-        );
-        if (globalJson.sdk && globalJson.sdk.version) {
-          version = globalJson.sdk.version;
-        }
       }
     }
 
-    if (version) {
+    if (versions.length) {
-      const dotnetInstaller = new installer.DotnetCoreInstaller(version);
+      const includePrerelease: boolean =
+        (core.getInput('include-prerelease') || 'false').toLowerCase() ===
+        'true';
+      let dotnetInstaller!: installer.DotnetCoreInstaller;
+      for (const version of new Set<string>(versions)) {
+        dotnetInstaller = new installer.DotnetCoreInstaller(
+          version,
+          includePrerelease
+        );
         await dotnetInstaller.installDotnet();
       }
+      installer.DotnetCoreInstaller.addToPath();
+    }
 
     const sourceUrl: string = core.getInput('source-url');
     const configFile: string = core.getInput('config-file');
@@ -46,4 +51,21 @@ export async function run() {
   }
 }
 
+function getVersionFromGlobalJson(globalJsonPath: string): string {
+  let version: string = '';
+  const globalJson = JSON.parse(
+    // .trim() is necessary to strip BOM https://github.com/nodejs/node/issues/20649
+    fs.readFileSync(globalJsonPath, {encoding: 'utf8'}).trim()
+  );
+  if (globalJson.sdk && globalJson.sdk.version) {
+    version = globalJson.sdk.version;
+    const rollForward = globalJson.sdk.rollForward;
+    if (rollForward && rollForward === 'latestFeature') {
+      const [major, minor] = version.split('.');
+      version = `${major}.${minor}`;
+    }
+  }
+  return version;
+}
+
 run();