Add Gitea Actions workflow for CI/CD

.github/workflows/build-and-deploy.yaml

@@ -0,0 +1,63 @@
+name: Build and Deploy
+
+on:
+  push:
+    branches: [master, main]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha,prefix=,suffix=,format=short
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Update kustomization.yaml
+        run: |
+          COMMIT_SHA=${{ github.sha }}
+          SHORT_SHA=${COMMIT_SHA:0:7}
+          sed -i "s|newTag: .*|newTag: ${SHORT_SHA}|" k8s/kustomization.yaml
+
+      - name: Commit and push changes
+        run: |
+          git config --local user.email "github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+          git add k8s/kustomization.yaml
+          git diff --quiet && git diff --staged --quiet || git commit -m "deploy: update image to ${SHORT_SHA} [skip ci]"
+          git push