Merge publish-docker-latest.yml & publish-docker-tag.yml (#2477)

close #1901

.github/workflows/publish-docker-latest.yml

@@ -1,30 +0,0 @@
----
-on:
-  release:
-    types: [released]
-
-name: Publish latest image to Docker Hub
-
-jobs:
-  docker-latest:
-    runs-on: docker
-    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.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-
-      - name: Build and push
-        id: docker_build
-        uses: docker/build-push-action@v2
-        with:
-          push: true
-          platforms: linux/amd64,linux/arm64
-          tags: getmeili/meilisearch:latest

.github/workflows/publish-docker.yml

@@ -3,11 +3,13 @@ on:
   push:
     tags:
       - '*'
+  release:
+    types: [released]
 
 name: Publish tagged image to Docker Hub
 
 jobs:
-  docker-tag:
+  docker:
     runs-on: docker
     steps:
       - name: Set up QEMU
@@ -27,8 +29,12 @@ jobs:
         uses: docker/metadata-action@v3
         with:
           images: getmeili/meilisearch
+          # Output 'latest' tag only when 'release' happen, instead of when 'push tag' event happend (default behavior).
+          # See https://github.com/docker/metadata-action#latest-tag
           flavor: latest=false
-          tags: type=ref,event=tag
+          tags: |
+            type=ref,event=tag
+            type=raw,value=latest,enable=${{ github.event_name == 'release' && github.event.action == 'released' }}
 
       - name: Build and push
         id: docker_build