Enable docker building on each commit

.github/workflows/docker-image.yaml

@@ -0,0 +1,29 @@
+name: Docker Release CI
+
+on:
+  push:
+    tags:
+      - 'v*'
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to container registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_PSW }}
+
+      - name: Build & Push Image
+        run: |
+          docker buildx build --push --platform linux/amd64,linux/arm64 --tag ptorstensson/aw-gateway-rs:dev --tag ptorstensson/aw-gateway-rs:$(date +%s) .