add building dependencies for docker

Author: splitbrain

.github/workflows/docker-build.yml

@@ -16,6 +16,22 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.4'
+
+      - name: Install Composer dependencies
+        run:
+          - cd backend
+          - composer install --no-interaction --no-progress --no-suggest --no-dev
+
+      - name: Build Frontend
+        run: |
+          cd frontend
+          npm install
+          npm run build
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3