chore(gh-actions): backend

Author: krystxf

.github/workflows/backend.yaml

@@ -0,0 +1,79 @@
+name: Backend
+on:
+  push:
+    # paths:
+    #   - "backend/**"
+    paths-ignore:
+      - "**/*.md"
+      - "**/*.mdx"
+      - "**/**.example.*"
+
+jobs:
+  ci:
+    name: CI
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Comment on PR
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const prNumber = context.payload.pull_request.number;
+            const owner = context.repo.owner;
+            const repo = context.repo.repo;
+
+            const message = ` 🐳 Backend successfully built and published to [hub.docker.com/r/krystxf/metro-now-backend](https://hub.docker.com/r/krystxf/metro-now-backend/tags)!🎉;
+
+            github.rest.issues.createComment({
+              issue_number: prNumber,
+              owner: owner,
+              repo: repo,
+              body: message
+            });
+
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v1
+
+      - run: |
+          cd ./backend
+          bun install 
+          bun run build
+
+  publish-docker-image:
+    needs: ci
+    runs-on: ubuntu-latest
+    # if: github.ref == 'refs/heads/main'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and publish
+        uses: docker/build-push-action@v5
+        with:
+          context: ./backend
+          push: true
+          tags: krystxf/metro-now-backend:latest
+
+      - name: Create commit comment
+        uses: peter-evans/commit-comment@v3
+        id: cc
+        with:
+          body: |
+            🐳Backend successfully built and published to [Docker Hub](https://hub.docker.com/r/krystxf/metro-now-backend/tags)!🎉
+      - name: Check outputs
+        run: |
+          echo "Comment ID - ${{ steps.cc.outputs.comment-id }}"