Composer cache

.github/workflows/designpatternsphp.yml

@@ -15,6 +15,17 @@ jobs:
           
     - uses: actions/checkout@v1
 
+    - 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: Validate composer.json and composer.lock
       run: composer validate