Update docker-publish.yml

Adding ability to push to dockerhub public image

.github/workflows/docker-publish.yml

@@ -12,6 +12,8 @@ on:
 
   # Run tests for any PRs.
   pull_request:
+    branches:
+      - main
 
 env:
   # TODO: Change variable to your image's name.
@@ -53,7 +55,7 @@ jobs:
       - name: Log into registry
         run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
 
-      - name: Push image
+      - name: Push image to github packages registry
         run: |
           IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME
 
@@ -74,3 +76,31 @@ jobs:
 
           docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
           docker push $IMAGE_ID:$VERSION
+
+  pushdockerhub:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+    steps:
+      -
+        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.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: dtushar/mifi:github
+      -
+        name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}
+