simplified build tasks, created seperate test for docker builds

.forgejo/workflows/ci-simple.yml

@@ -66,9 +66,28 @@ jobs:
         fi
         echo "Frontend build successful"
         
-    - name: Test Docker builds
+  docker-build:
+    name: Docker Build Test
+    runs-on: docker
+    needs: test-and-build
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Test backend Docker build
+      working-directory: ./backend
       run: |
-        cd backend && docker build -t tschunkorder-backend-test .
-        cd ../frontend && docker build -t tschunkorder-frontend-test .
-        cd .. && docker compose build
-        echo "All Docker builds successful" 
+        docker build -t tschunkorder-backend-test .
+        echo "Backend Docker build successful"
+        
+    - name: Test frontend Docker build
+      working-directory: ./frontend
+      run: |
+        docker build -t tschunkorder-frontend-test .
+        echo "Frontend Docker build successful"
+        
+    - name: Test docker compose build
+      run: |
+        docker compose build
+        echo "Docker Compose build successful"