Properly tag Docker images

.github/workflows/docker.yml

@@ -15,14 +15,26 @@ jobs:
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
-      - name: Login to DockerHub
+      - name: Login to Docker Hub
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Build and push image to DockerHub
-        uses: docker/build-push-action@v3
+      - name: Read RabbitMQ version
+        run: |
+          RABBITMQ_VERSION=$(grep "rabbitmq:" Dockerfile | cut -d ":" -f 2 | cut -d "-" -f 1)
+          RABBITMQ_MAJOR=$(echo $RABBITMQ_VERSION | cut -d "." -f 1)
+          RABBITMQ_MINOR=$(echo $RABBITMQ_VERSION | cut -d "." -f 2)
+          echo "RABBITMQ_VERSION=$RABBITMQ_VERSION" >> $GITHUB_ENV
+          echo "RABBITMQ_MAJOR=$RABBITMQ_MAJOR" >> $GITHUB_ENV
+          echo "RABBITMQ_MINOR=$RABBITMQ_MINOR" >> $GITHUB_ENV
+      - name: Build and push image to Docker Hub
+        uses: docker/build-push-action@v4
         with:
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: masstransit/rabbitmq:latest
+          tags: |
+            masstransit/rabbitmq:${{ env.RABBITMQ_MAJOR }}
+            masstransit/rabbitmq:${{ env.RABBITMQ_MAJOR }}.${{ env.RABBITMQ_MINOR }}
+            masstransit/rabbitmq:${{ env.RABBITMQ_VERSION }}
+            masstransit/rabbitmq:latest

README.md

@@ -1,9 +1,9 @@
 # RabbitMQ with delayed exchange
 
-This repository contains the [RabbitMQ](https://hub.docker.com/_/rabbitmq) **management-alpine** image with [delayed message exchange](https://github.com/rabbitmq/rabbitmq-delayed-message-exchange/) plugin enabled.
+This repository contains the [RabbitMQ](https://hub.docker.com/_/rabbitmq) `management` Docker image with [delayed message exchange](https://github.com/rabbitmq/rabbitmq-delayed-message-exchange/) plugin enabled.
 
 This image is build to be used with [MassTransit - Scheduling](http://masstransit-project.com/advanced/scheduling/rabbitmq-delayed.html).
 
 ## Documentation
 
-The [documentation](https://hub.docker.com/_/rabbitmq/) is the same as the default management-alpine image.
+The [documentation](https://hub.docker.com/_/rabbitmq/) is the same as the default `management` image.