Merge pull request 'feat(ci): add Docker validation jobs for frontend and backend' (!154) from update-pipelines into main

Reviewed-on: #154

.gitea/workflows/ci.yml

@@ -74,6 +74,36 @@ jobs:
         working-directory: ./backend
         run: gradle --stop
 
+  validate-docker-frontend:
+    runs-on: ubuntu-latest
+    name: Docker frontend validation
+    container:
+      image: catthehacker/ubuntu:act-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build
+        uses: docker/build-push-action@v6
+        with:
+          context: frontend/
+          file: frontend/.docker/Dockerfile
+          push: false
+
+  validate-docker-backend:
+    runs-on: ubuntu-latest
+    name: Docker backend validation
+    container:
+      image: catthehacker/ubuntu:act-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build
+        uses: docker/build-push-action@v6
+        with:
+          context: backend/
+          file: backend/.docker/Dockerfile
+          push: false
+
   eslint:
     runs-on: ubuntu-latest
     name: eslint