Merge pull request #5 from holoplot/docker

Create container images for kubelish

.github/workflows/go.yml

@@ -0,0 +1,67 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  release:
+    types:
+      - published
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 1.23
+
+    - name: Unit Test
+      run: go test -v ./...
+
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        # list of Docker images to use as base name for tags
+        images: |
+          ${{ secrets.DOCKERHUB_USERNAME }}/kubelish
+        # generate Docker tags based on the following events/attributes
+        tags: |
+          type=schedule
+          type=ref,event=branch
+          type=ref,event=pr
+          type=ref,event=tag
+          type=semver,pattern={{version}}
+          type=semver,pattern={{major}}.{{minor}}
+          type=semver,pattern={{major}}
+          type=sha
+
+    - name: Login to Docker Hub
+      if: github.event_name != 'pull_request'
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Build 
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        platforms: linux/amd64,linux/arm64
+
+

Dockerfile

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+FROM --platform=$BUILDPLATFORM golang:1.23-alpine AS build
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /go/src/github.com/holoplot/kubelish
+
+# Only invalidate the download layer if the modules changed
+COPY ["go.mod", "go.sum", "./"]
+RUN go mod download
+
+COPY . .
+RUN --mount=type=cache,target=/root/.cache/go-build \
+  CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build ./cmd/kubelish/main.go
+
+FROM alpine:3.21
+
+RUN apk add --update ca-certificates && rm -rf /var/cache/apk/*
+COPY --from=build /go/src/github.com/holoplot/kubelish/main kubelish
+
+ENTRYPOINT ["/kubelish"]