ci: add publish pipeline

.github/workflows/publish.yml

@@ -0,0 +1,35 @@
+name: Build and Publish Docker Image
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+  DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+
+jobs:
+  build:
+    name: Build and Publish
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build the Docker image
+        run: |
+          docker build -t mauricioromagnollo/kafka-rest:latest .
+
+      - name: Login to Docker Hub
+        run: |
+          echo $DOCKER_PASSWORD | docker login -u $DOCKER_USERNAME --password-stdin
+
+      - name: Publish Docker Image to Docker Hub
+        if: success()
+        run: |
+          docker push mauricioromagnollo/kafka-rest

Dockerfile

@@ -0,0 +1,9 @@
+FROM golang:1.20.6 as builder
+WORKDIR /app
+COPY . .
+RUN GOOS=linux go build -ldflags="-w -s" -o bin/api cmd/api/main.go
+
+FROM scratch
+COPY --from=builder /app/bin/api .
+EXPOSE 8080
+CMD [ "./api" ]