add docker build args

.github/workflows/release.yml

@@ -48,6 +48,9 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
+      - name: Get Release Version
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+
       - name: Build and push
         uses: docker/build-push-action@v2
         with:
@@ -57,3 +60,5 @@ jobs:
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            RELEASE_VERSION=${{ env.RELEASE_VERSION }}

helper/Dockerfile-release

@@ -2,11 +2,12 @@
 FROM --platform=$TARGETPLATFORM golang:1.16-alpine as builder
 ARG TARGETARCH
 ARG TARGETOS
+ARG RELEASE_VERSION
 WORKDIR /app/dtm
 # RUN go env -w GOPROXY=https://mirrors.aliyun.com/goproxy/,direct
 EXPOSE 8080
 COPY . .
-RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags="-s -w"
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags="-s -w -X main.Version=$RELEASE_VERSION"
 
 FROM --platform=$TARGETPLATFORM alpine
 COPY --from=builder /app/dtm/dtm /app/dtm/