used builtin actions.

.github/workflows/docker-image.yml

@@ -1,28 +1,35 @@
-name: Docker Build/Publish Image 
+name: Build Multiplatform Image
+
 on:
   push:
-    branches: [ master ]  
-jobs:   
-  build:    
-    runs-on: ubuntu-18.04    
-    env:           
-      DOCKER_IMAGE: kshfse/dashy
-      DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-      DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}  
-      TARGETPLATFORM: linux/arm/v7                 
-    steps:    
-    - name: Checkout the code       
-      uses: actions/checkout@v1          
-    - name: Set up Docker Buildx      
-      uses: crazy-max/ghaction-docker-buildx@v1      
-      with:        
-        version: latest      
-    - name: Docker Login      
-      if: success()      
-      run: |        
-        echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin          
-    - name: Run Buildx (push image)      
-      if: success()      
-      run: |        
-        docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 --tag kshfse/dashy:latest --file ./docker/Dockerfile-multi-arch --output type=image,push=true .
+    branches:
+      - 'master'
 
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          dockerfile: ./docker/Dockerfile-multi-arch
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
+          push: true
+          tags: ${{ secrets.DOCKER_REPO }}:latest