Add CI

.docker/Dockerfile

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+FROM golang:1.19-bullseye as build-env
+
+WORKDIR /usr/src/app
+ADD ./ /usr/src/app
+
+RUN go build -o /app
+
+FROM gcr.io/distroless/base
+
+COPY --from=build-env /
+
+CMD ["/app", "-c", "/app.conf"]

.github/workflows/publish.yaml

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+name: Docker images build
+
+on:
+  push:
+    tags:
+    - 'v*'
+
+jobs:
+  build-and-push-docker:
+    runs-on: ubuntu-latest
+    environment: secure
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Set app version
+      run: V=${{ github.ref_name }} && VT="${V#v}" && sed "s@APP_VERSION@$VT@" misc/version.go.in > misc/version.go
+
+    - name: Login to Registry Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.REGISTRY_USERNAME }}
+        password: ${{ secrets.REGISTRY_TOKEN }}
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: |
+          nixyslab/nxs-support-bot-migrate
+
+    - name: Build and push
+      uses: docker/build-push-action@v4
+      with:
+        context: .
+        file: .docker/Dockerfile
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}

misc/version.go.in

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+package misc
+
+const VERSION = "APP_VERSION"