Build/Test Tools: Simplify Composer package caching.

This simplifies the caching of Composer dependencies in the coding standards and PHP compatibility workflows by using a published action. This combines 3 steps into 1 within these workflows.

Because the Composer implementation within the PHPUnit test workflow is a bit specialized (`composer install` is run within the Docker container), caching has been left as is in that workflow. However, the cache key has been changed to include the version of PHP being tested. This will prevent incorrect versions of dependencies being present when they are required on jobs other than PHP 8.

Props jrf.
See #50401.

git-svn-id: https://develop.svn.wordpress.org/trunk@49938 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/coding-standards.yml

@@ -16,10 +16,10 @@ jobs:
   #
   # Performs the following steps:
   # - Checks out the repository.
-  # - Configures caching for Composer.
   # - Sets up PHP.
   # - Logs debug information.
-  # - Installs Composer dependencies (from cache if possible).
+  # - Installs Composer dependencies (use cache if possible).
+  # - Make Composer packages available globally.
   # - Logs PHP_CodeSniffer debug information.
   # - Runs PHPCS on the full codebase with warnings suppressed.
   # - Runs PHPCS on the `tests` directory without warnings suppressed.
@@ -33,20 +33,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - name: Get Composer cache directory
-        id: composer-cache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-
-      - name: Set up Composer caching
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-composer-dependencies
-        with:
-          path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-composer-
-
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
@@ -60,9 +46,12 @@ jobs:
           composer --version
 
       - name: Install Composer dependencies
-        run: |
-          composer install --prefer-dist --no-suggest --no-progress --no-ansi --no-interaction
-          echo "${PWD}/vendor/bin" >> $GITHUB_PATH
+        uses: ramsey/composer-install@v1
+        with:
+          composer-options: "--no-progress --no-ansi --no-interaction"
+
+      - name: Make Composer packages available globally
+        run: echo "${PWD}/vendor/bin" >> $GITHUB_PATH
 
       - name: Log PHPCS debug information
         run: phpcs -i

.github/workflows/php-compatibility.yml

@@ -17,10 +17,10 @@ jobs:
   #
   # Performs the following steps:
   # - Checks out the repository.
-  # - Configures caching for Composer.
   # - Sets up PHP.
   # - Logs debug information about the runner container.
-  # - Installs Composer dependencies (from cache if possible).
+  # - Installs Composer dependencies (use cache if possible).
+  # - Make Composer packages available globally.
   # - Logs PHP_CodeSniffer debug information.
   # - Runs the PHP compatibility tests.
   # - todo: Configure Slack notifications for failing scans.
@@ -33,20 +33,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - name: Get Composer cache directory
-        id: composer-cache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-
-      - name: Set up Composer caching
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-composer-dependencies
-        with:
-          path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-composer-
-
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
@@ -60,9 +46,12 @@ jobs:
           composer --version
 
       - name: Install Composer dependencies
-        run: |
-          composer install --prefer-dist --no-suggest --no-progress --no-ansi --no-interaction
-          echo "${PWD}/vendor/bin" >> $GITHUB_PATH
+        uses: ramsey/composer-install@v1
+        with:
+          composer-options: "--no-progress --no-ansi --no-interaction"
+
+      - name: Make Composer packages available globally
+        run: echo "${PWD}/vendor/bin" >> $GITHUB_PATH
 
       - name: Log PHPCS debug information
         run: phpcs -i

.github/workflows/phpunit-tests.yml

@@ -191,9 +191,9 @@ jobs:
           cache-name: cache-composer-dependencies
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          key: ${{ runner.os }}-php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
-            ${{ runner.os }}-composer-
+            ${{ runner.os }}-php-${{ matrix.php }}-composer-
 
       - name: Install Composer dependencies
         if: ${{ env.COMPOSER_INSTALL == true || env.LOCAL_PHP == '8.0-fpm' }}