ci: add GitHub Actions workflow for testing and building

Author: alexisbouchez

.github/workflows/ci.yml

@@ -0,0 +1,85 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache: true
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Run tests
+        run: go test -v -race -coverprofile=coverage.out ./...
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v4
+        with:
+          files: ./coverage.out
+          fail_ci_if_error: false
+        continue-on-error: true
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache: true
+
+      - name: Run go vet
+        run: go vet ./...
+
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: latest
+          args: --timeout=5m
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache: true
+
+      - name: Build ravel
+        run: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/ravel cmd/ravel/ravel.go
+
+      - name: Build initd
+        run: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/initd cmd/initd/initd.go
+
+      - name: Build jailer
+        run: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/jailer cmd/jailer/jailer.go
+
+      - name: Upload binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: ravel-linux-amd64
+          path: bin/
+          retention-days: 7