Verify code blocks

Author: Nyholm

.github/workflows/code-blocks.yml

@@ -0,0 +1,59 @@
+name: Code Blocks
+
+on:
+  pull_request: ~
+
+jobs:
+  symfony-code-block-checker:
+    name: Verify
+    runs-on: Ubuntu-20.04
+    continue-on-error: true
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set-up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+            php-version: 8.0
+            coverage: none
+
+      - name: Fetch branch from where the PR started
+        run: git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
+
+      - name: Find modified files
+        id: find-files
+        run: echo "::set-output name=files::$(git diff --name-only origin/${{ github.base_ref }} HEAD | grep ".rst" | tr '\n' ' ')"
+
+      - name: Get composer cache directory
+        id: composercache
+        working-directory: _build
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+            path: ${{ steps.composercache.outputs.dir }}
+            key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+            restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        if: ${{ steps.find-files.outputs.files }}
+        run: |
+          git clone --depth 15 https://github.com/symfony-docs-tools/code-block-checker.git ../_checker
+          cd ../_checker
+          composer install
+
+      - name: Generate baseline
+        if: ${{ steps.find-files.outputs.files }}
+        run: |
+          CURRENT=$(git rev-parse HEAD)
+          git checkout -m ${{ github.base_ref }}
+          ../_checker/code-block-checker.php verify:docs `pwd` ${{ steps.find-files.outputs.files }} --generate-baseline=baseline.json
+          git checkout -m $CURRENT
+          cat baseline.json
+
+      - name: Verify examples
+        if: ${{ steps.find-files.outputs.files }}
+        run: |
+          ../_checker/code-block-checker.php verify:docs `pwd` ${{ steps.find-files.outputs.files }} --baseline=baseline.json --output-format=github