automating multi-platform builds

.github/workflows/docker-autobuild.yml

@@ -5,13 +5,37 @@ on: [push]
 jobs:
   
   build-upload:
-    name: Build Image and Upload to Docker Hub
+    name: Build Muilti-Platform Image and Upload to Docker Hub
     runs-on: ubuntu-latest
     steps:
-    - name: Checkout Repo
+    - 
+      name: Build Docker buildx
+      run: |
+        export DOCKER_CLI_EXPERIMENTAL=enabled
+        export DOCKER_BUILDKIT=1
+        docker build --platform=local -o . git://github.com/docker/buildx
+        mkdir -p ~/.docker/cli-plugins && mv buildx ~/.docker/cli-plugins/docker-buildx
+
+    - 
+      name: Docker Version
+      run: |
+        echo "DOCKER VERSION:"
+        docker version
+        echo "BUILDX VERSION:"
+        docker buildx version
+
+    - 
+      name: Checkout Repo
       uses: actions/checkout@v1
 
-    - name: Build and Upload
+    - 
+      name: Create Builder Instance
+      run: |
+        docker run --rm --privileged docker/binfmt:66f9012c56a8316f9244ffd7622d7c21c1f6f28d
+        docker buildx create --use --name mybuilder
+
+    - 
+      name: Build and Upload
       env:
         DOCKER_TOKEN: ${{ secrets.DOCKER_TOKEN }}
       run: |
@@ -22,10 +46,8 @@ jobs:
         # Build image
         docker build --tag ${NAME}:${TAG} .
 
-        # Push image as current version
+        # Build image as TAG version
-        docker login -u silentdigit -p ${DOCKER_TOKEN}
+        docker buildx build -t ${NAME}:${TAG} --platform=linux/arm,linux/arm64,linux/amd64 . --push
-        docker push ${NAME}:${TAG}
 
-        # Push image as latest
+        # Build image as latest version
-        docker tag ${NAME}:${TAG} ${NAME}:latest
+        docker buildx build -t ${NAME}:latest --platform=linux/arm,linux/arm64,linux/amd64 . --push
-        docker push ${NAME}:latest