Add GitHub Actions workflow and Dockerfile for Docker image deployment

.github/workflows/deploy.yml

@@ -0,0 +1,29 @@
+name: Build Docker image
+
+on:
+  push:
+    branches: ["canary", "main", "feat/monitoring"]
+
+jobs:
+  build-and-push-templates-image:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./app/Dockerfile
+          push: true
+          tags: |
+            dokploy/templates:latest
+          platforms: linux/amd64