Allow tag based deployments

.github/workflows/publish.yml

@@ -6,6 +6,8 @@ on:
   push:
     branches:
       - 'master'
+    tags:
+      - '*'
 
 jobs:
   docker:
@@ -23,7 +25,14 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build and push
-        id: docker_build
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: docker/build-push-action@v2
+        with:
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: glenndehaan/unifi-voucher-site:${{ github.ref_name }}
+      - name: Build and push (latest)
+        if: github.ref == 'refs/heads/master'
         uses: docker/build-push-action@v2
         with:
           platforms: linux/amd64,linux/arm64