Release workflow

Author: kompotkot

.github/workflows/release.yml

@@ -0,0 +1,67 @@
+name: Prepare release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  create_release:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/create-release@v1
+        id: create_release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: "checkenv ${{ github.ref_name }}"
+          body: |
+            Version ${{ github.ref_name }} of checkenv
+          draft: true
+          prerelease: false
+    outputs:
+      upload_url: ${{ steps.create_release.outputs.upload_url }}
+  upload_assets:
+    runs-on: ubuntu-20.04
+    needs: create_release
+    strategy:
+      fail-fast: true
+      matrix:
+        os: ["linux", "darwin", "windows"]
+        arch: ["386", "amd64", "arm64"]
+        exclude:
+          - os: "darwin"
+            arch: "arm"
+          - os: "darwin"
+            arch: "386"
+          - os: "windows"
+            arch: "arm"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: ^1.16.0
+      - name: Build binary for each valid (GOOS, GOARCH) pair
+        env:
+          GOOS: ${{ matrix.os }}
+          GOARCH: ${{ matrix.arch }}
+        run: |
+          BUILD_DIR="checkenv-${{ github.ref_name }}-${GOOS}-${GOARCH}"
+          EXTENSION=""
+          if [ "$GOOS" = "windows" ]; then
+            EXTENSION=".exe"
+          fi
+          mkdir "$BUILD_DIR"
+          cp README.md "$BUILD_DIR/README.md"
+          go build -o "$BUILD_DIR/checkenv${EXTENSION}" .
+          zip -r "$BUILD_DIR.zip" "$BUILD_DIR"
+      - name: Upload release asset for each valid (GOOS, GOARH) pair
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ needs.create_release.outputs.upload_url }}
+          asset_path: ./checkenv-${{ github.ref_name }}-${{ matrix.os }}-${{ matrix.arch }}.zip
+          asset_name: checkenv-${{ github.ref_name }}-${{ matrix.os }}-${{ matrix.arch }}.zip
+          asset_content_type: application/zip