failover to github runner in case selfhosted runner is unavailable

.github/workflows/docker-image.yml

@@ -6,6 +6,7 @@ on:
     branches:
       - "stable"       # For 'latest' and 'stable' tags
       - "unstable"     # For 'unstable' tag
+      - "dev"          # For 'dev' tag
     tags:
       - "v*.*.*"       # Trigger on semantic version tags like v1.2.3
       - "v*.*.*-*"     # Trigger on pre-release semver tags like v1.2.3-beta.1
@@ -13,14 +14,17 @@ on:
     branches:
       - "stable"
       - "unstable"
+      - "dev"          # For pull requests on 'dev' branch
 
 permissions:
   contents: read
 
 jobs:
-  build:
+  # Job 1: Attempt to build on your self-hosted runner
+  build_self_hosted:
     runs-on: self-hosted
-
+    
+    timeout-minutes: 5
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -47,18 +51,13 @@ jobs:
         with:
           images: alplat/dockflare
           tags: |
-            # For Git tags like v1.2.3 -> image tag 1.2.3
             type=semver,pattern={{version}}
-            # For Git tags like v1.2.3-beta.1 -> image tag 1.2.3-beta.1
             type=semver,pattern={{version}},suffix=-{{premajor}}-{{prerelease}}
-            # For stable branch -> image tag 'latest' and 'stable'
             type=ref,event=branch,pattern=stable,value=latest
             type=ref,event=branch,pattern=stable,value=stable
-            # For unstable branch -> image tag 'unstable'
             type=ref,event=branch,pattern=unstable,value=unstable
-            # For all pushes, create a SHA tag
+            type=ref,event=branch,pattern=dev,value=dev     
             type=sha,format=short
-            # Add a tag for the Git ref (branch name or tag name) itself
             type=ref,event=tag
             type=ref,event=branch
 
@@ -71,3 +70,56 @@ jobs:
           push: ${{ github.event_name == 'push' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+  # Job 2: This job only runs if the self-hosted build fails or is canceled
+  build_github_hosted_fallback:
+    
+    needs: build_self_hosted
+    
+    if: failure() || cancelled()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        if: github.event_name == 'push'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: alplat/dockflare
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{version}},suffix=-{{premajor}}-{{prerelease}}
+            type=ref,event=branch,pattern=stable,value=latest
+            type=ref,event=branch,pattern=stable,value=stable
+            type=ref,event=branch,pattern=unstable,value=unstable
+            type=ref,event=branch,pattern=dev,value=dev     # Added for 'dev' branch
+            type=sha,format=short
+            type=ref,event=tag
+            type=ref,event=branch
+
+      - name: Build and Push Docker Image
+        id: build_and_push
+        uses: docker/build-push-action@v5
+        with:
+          context: ./dockflare
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name == 'push' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}