Create docker_build_push_dev.yml

.github/workflows/docker_build_push_dev.yml

@@ -0,0 +1,43 @@
+name: Build and push pihole-unbound-hyperlocal with tag dev
+
+on:
+  push:
+    branches: [ dev ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - 
+      name: Checkout
+      uses: actions/checkout@v2
+    - 
+      name: Login to Docker Hub
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.DOCKER_USER }}
+        password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
+    - 
+      name: Set up variables
+      run: |
+        VER=$(cat ./docker-build/VERSION)
+        echo "VERSION=$VER" >> $GITHUB_ENV
+    -
+      name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+    -
+      name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+    -
+      name: Build and push
+      uses: docker/build-push-action@v2
+      with:
+        context: ./docker-build
+        file: ./docker-build/Dockerfile
+        platforms: |
+          linux/arm/v7
+          linux/arm64
+          linux/amd64
+        push: true
+        tags: | 
+          ${{ secrets.DOCKER_USER }}/pihole-unbound-hyperlocal:${{ env.VERSION }}
+          ${{ secrets.DOCKER_USER }}/pihole-unbound-hyperlocal:dev