chore: restructure GitHub Actions workflows

Author: gainsborouo

.github/workflows/backend-build-image.yml

@@ -1,10 +1,10 @@
-name: Frontend Build Image
+name: Build Images
 
 on:
   workflow_call:
 
 jobs:
-  frontend-build-image:
+  frontend:
     runs-on: ubuntu-latest
 
     steps:
@@ -35,3 +35,33 @@ jobs:
             VITE_API_BASE_URL=${{ secrets.FRONTEND_API_BASE_URL }}
           cache-from: type=registry,ref=ghcr.io/nctucsunion/pastexam:frontend-buildcache
           cache-to: type=registry,ref=ghcr.io/nctucsunion/pastexam:frontend-buildcache,mode=max
+
+  backend:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Backend Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: ./backend
+          file: ./backend/Dockerfile
+          push: true
+          platforms: linux/amd64
+          tags: |
+            ghcr.io/nctucsunion/pastexam:backend
+            ghcr.io/nctucsunion/pastexam:backend-${{ github.sha }}
+          cache-from: type=registry,ref=ghcr.io/nctucsunion/pastexam:backend-buildcache
+          cache-to: type=registry,ref=ghcr.io/nctucsunion/pastexam:backend-buildcache,mode=max

.github/workflows/backend-lint.yml

@@ -1,10 +1,10 @@
-name: Frontend Lint
+name: Lint
 
 on:
   workflow_call:
 
 jobs:
-  frontend-lint:
+  frontend:
     runs-on: ubuntu-latest
 
     steps:
@@ -41,3 +41,13 @@ jobs:
       - name: Run lint
         run: pnpm run lint
         working-directory: ./frontend
+
+  backend:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Backend lint placeholder
+        run: echo "Backend lint (flake8) will be added soon."

…ithub/workflows/frontend-build-image.yml .github/workflows/build.yml.github/workflows/frontend-build-image.yml renamed to .github/workflows/build.yml .github/workflows/frontend-build-image.yml renamed to .github/workflows/build.yml

@@ -9,44 +9,21 @@ permissions:
   packages: write
 
 jobs:
-  frontend-lint:
-    uses: ./.github/workflows/frontend-lint.yml
+  lint:
+    uses: ./.github/workflows/lint.yml
 
-  backend-lint:
-    uses: ./.github/workflows/backend-lint.yml
+  test:
+    needs: lint
+    uses: ./.github/workflows/test.yml
 
-  frontend-test:
-    needs:
-      - frontend-lint
-      - backend-lint
-    uses: ./.github/workflows/frontend-test.yml
-
-  backend-test:
-    needs:
-      - frontend-lint
-      - backend-lint
-    uses: ./.github/workflows/backend-test.yml
-
-  frontend-build-image:
-    needs:
-      - frontend-test
-      - backend-test
-    if: github.ref == 'refs/heads/main'
-    uses: ./.github/workflows/frontend-build-image.yml
-    secrets: inherit
-
-  backend-build-image:
-    needs:
-      - frontend-test
-      - backend-test
+  build:
+    needs: test
     if: github.ref == 'refs/heads/main'
-    uses: ./.github/workflows/backend-build-image.yml
+    uses: ./.github/workflows/build.yml
     secrets: inherit
 
   deploy:
-    needs:
-      - frontend-build-image
-      - backend-build-image
+    needs: build
     if: github.ref == 'refs/heads/main'
     uses: ./.github/workflows/deploy.yml
     secrets: inherit

.github/workflows/frontend-test.yml

@@ -1,10 +1,20 @@
-name: Backend Test
+name: Test
 
 on:
   workflow_call:
 
 jobs:
-  backend-test:
+  frontend:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Placeholder frontend tests
+        run: echo "Frontend tests are not configured yet."
+
+  backend:
     runs-on: ubuntu-latest
 
     steps: