Add workflows for go build/test, docker build and release using goreleaser and docker

.github/workflows/go.yml

@@ -0,0 +1,78 @@
+name: Go build and test
+
+on:
+  push:
+    branches: [ "*" ]
+  pull_request:
+    branches: [ master ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        version: ["1.16", "1.17", "1.18", "1.19", "1.20", "1.21"]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.version }}
+        cache: true
+
+    - name: Build
+      run: go build -v ./...
+
+  test:
+    strategy:
+        matrix:
+          version: ["1.16", "1.17", "1.18", "1.19", "1.20", "1.21"]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.version }}
+        cache: true
+
+    - name: Unit tests
+      run: go test -v ./...
+
+  race-condition:
+    strategy:
+      matrix:
+        version: ["1.16", "1.17", "1.18", "1.19", "1.20", "1.21"]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.version }}
+        cache: true
+
+    - name: Test race condition
+      run: go test -race -vet=off ./...
+
+  docker:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Build
+      uses: docker/build-push-action@v5
+      with:
+        push: false
+        cache-from: type=gha
+        cache-to: type=gha,mode=max

.github/workflows/release.yml

@@ -0,0 +1,80 @@
+name: Release with Docker and goreleaser
+
+on:
+  push:
+    # run only against tags
+    tags:
+      - '*'
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Fetch all tags
+        run: git fetch --force --tags
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.21"
+          cache: true
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v5
+        with:
+          # either 'goreleaser' (default) or 'goreleaser-pro'
+          distribution: goreleaser
+          version: latest
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        # list of Docker images to use as base name for tags
+        images: |
+          ghcr.io/lescactus/unix2dos-go
+        # generate Docker tags based on the following events/attributes
+        tags: |
+          type=ref,event=branch
+          type=semver,pattern={{raw}}
+          type=semver,pattern={{version}}
+          type=semver,pattern={{major}}.{{minor}}
+          type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }} # disable for major version starting with 0
+          type=sha
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Build
+      uses: docker/build-push-action@v5
+      env:
+        tag: ${{ github.ref }}
+      with:
+        push: true
+        cache-from: type=gha
+        cache-to: type=gha,mode=max
+        labels: ${{ steps.meta.outputs.labels }}
+        tags: ${{ steps.meta.outputs.tags }}

.goreleaser.yaml

@@ -0,0 +1,3 @@
+builds:
+  - env:
+      - CGO_ENABLED=0

Dockerfile

@@ -1,27 +1,20 @@
-FROM golang:1.16-alpine as builder
+FROM golang:1.21 as builder
 
-ADD go.* /go/src/
+WORKDIR /app
 
-WORKDIR /go/src/
+COPY go.* ./
 
 RUN go mod download
 
-COPY . /go/src/
-
-RUN go build -o main
+COPY . .
 
-FROM alpine:3
+RUN CGO_ENABLED=0 go build -ldflags '-d -w -s' -o main
 
-RUN apk update \
-    && apk add ca-certificates \
-    && rm -rf /var/cache/apk* \
-    && adduser -u 1000 -D -s /bin/sh app \
-    && install -d -m 0750 -o app -g app /app
-
-WORKDIR /app
+FROM scratch
 
-COPY --from=builder /go/src/main /app
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /app/main /
 
-USER app
+EXPOSE 8080
 
-ENTRYPOINT ["/app/main"]
+ENTRYPOINT ["/main"]

README.md

@@ -33,7 +33,7 @@ Flags:
 
 ### From source with go
 
-You need a working [go](https://golang.org/doc/install) toolchain (It has been developped and tested with go 1.16 and go 1.16 only, but should work with go >= 1.12). Refer to the official documentation for more information (or from your Linux/Mac/Windows distribution documentation to install it from your favorite package manager).
+You need a working [go](https://golang.org/doc/install) toolchain (It has been developped and tested with go 1.16 and go 1.16 only, but should work with go >= 1.16). Refer to the official documentation for more information (or from your Linux/Mac/Windows distribution documentation to install it from your favorite package manager).
 
 ```sh
 # Clone this repository