Add sage and bedrock example, add cache to examples

examples/symfony.yml

@@ -7,7 +7,6 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       fail-fast: false
-      max-parallel: 3
       matrix:
         operating-system: [ubuntu-latest, windows-latest, macOS-latest]
         php-versions: ['7.3']
@@ -20,6 +19,15 @@ jobs:
           php-version: ${{ matrix.php-versions }}
           extension-csv: mbstring, xml, ctype, iconv
           coverage: xdebug #optional
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+      - name: Cache composer dependencies
+        uses: actions/cache@v1
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
       - name: Install Composer dependencies
         run: |
           composer require symfony/orm-pack