add docker build

.github/workflows/publish_docker.yml

@@ -0,0 +1,42 @@
+name: Docker Publish
+
+on:
+  push:
+    tags:
+      - "*"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/[email protected]
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/[email protected]
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,17 @@
+# Build App
+FROM golang:1.20.0-alpine3.17 AS builder
+
+WORKDIR ${GOPATH}/src/github.com/mpostument/awstaghelper
+COPY . ${GOPATH}/src/github.com/mpostument/awstaghelper
+
+RUN go build -o /go/bin/awstaghelper .
+
+
+# Create small image with binary
+FROM alpine:3.17
+
+RUN apk --no-cache add ca-certificates
+
+COPY --from=builder /go/bin/awstaghelper /usr/bin/awstaghelper
+
+ENTRYPOINT ["/usr/bin/awstaghelper"]