Update build.yml

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v3
       with:
-        go-version: 1.21
+        go-version: '1.21'
     - name: Check out code
       uses: actions/checkout@v3
     - name: Install dependencies
@@ -43,18 +43,18 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
-      - name: Extract Version
-        id: version_step
-        run: |
-          echo "##[set-output name=version;]VERSION=${GITHUB_REF#$"refs/tags/v"}"
-          echo "##[set-output name=version_tag;]mochimqtt:${GITHUB_REF#$"refs/tags/v"}"
-          echo "##[set-output name=latest_tag;]mochimqtt:latest"
-      - name: Print Version
-        run: |
-          echo ${{steps.version_step.outputs.version_tag}}
-          echo ${{steps.version_step.outputs.latest_tag}}
       - name: Checkout
         uses: actions/checkout@v4
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: mochimqtt/server
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -68,8 +68,5 @@ jobs:
           context: .
           file: ./Dockerfile
           push: true
-          tags: |
-            ${{env.VERSION_TAG}}
-            ${{env.LATEST_TAG}}
-          build-args: |
-            ${{steps.version_step.outputs.version}}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}