Optimize node_modules cache for Platform.sh deployment (#241)

.platform.app.yaml

@@ -14,6 +14,12 @@ hooks:
     build: |
         set -x -e
         
+        # Restore node_modules from cache if available
+        if [ -d "$PLATFORM_CACHE_DIR/node_modules" ]; then
+            echo "Restoring node_modules from cache"
+            cp -R "$PLATFORM_CACHE_DIR/node_modules" tests/Application/
+        fi
+        
         wkhtmltopdf -V
         
         curl -fs https://get.symfony.com/cloud/configurator | bash
@@ -22,8 +28,13 @@ hooks:
         
         cd tests/Application
 
-        yarn install
+        yarn install --frozen-lockfile
         yarn build:prod
+        
+        # Cache node_modules for next build
+        echo "Caching node_modules directory"
+        rm -rf "$PLATFORM_CACHE_DIR/node_modules"
+        cp -R node_modules "$PLATFORM_CACHE_DIR/"
     deploy: |
         set -x -e
         
@@ -67,6 +78,7 @@ mounts:
     "/tests/Application/public/assets": "shared:files/assets"
     "/tests/Application/public/bundles": "shared:files/bundles"
     "/tests/Application/private/credit_memos/": "shared:files/credit_memos"
+    "/tests/Application/node_modules/.cache": "shared:files/node_modules/.cache"
 
 # The configuration of app when it is exposed to the web.
 web: