add release job

.github/workflows/release.yml

@@ -0,0 +1,105 @@
+name: Release
+on:
+  push:
+    tags:
+      - 'v*'
+jobs:
+  build:
+    strategy:
+      matrix:
+        target:
+          - x86_64-unknown-linux-gnu
+          - x86_64-pc-windows-gnu
+          - x86_64-apple-darwin
+        include:
+          - target: x86_64-unknown-linux-gnu
+            os: ubuntu-latest
+          - target: x86_64-pc-windows-gnu
+            os: ubuntu-latest
+          - target: x86_64-apple-darwin
+            os: macos-latest
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v1
+
+      # https://github.com/actions/cache/blob/master/examples.md#rust---cargo
+      - name: Cache cargo registry
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+      - name: Cache cargo index
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+      - name: Cache cargo build
+        uses: actions/cache@v1
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+      - uses: actions-rs/cargo@v1.0.1
+        with:
+          command: build
+          args: --release --target=${{ matrix.target }}
+          use-cross: true
+
+      - run: |
+          zip --junk-paths wasminspect-${{ matrix.target }} target/${{ matrix.target }}/release/wasminspect{,.exe}
+      - uses: actions/upload-artifact@v1
+        with:
+          name: build-${{ matrix.target }}
+          path: wasminspect-${{ matrix.target }}.zip
+  create-release:
+    needs: [build]
+    runs-on: ubuntu-latest
+    steps:
+      - id: create-release
+        uses: actions/create-release@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false
+      - run: |
+          echo '${{ steps.create-release.outputs.upload_url }}' > release_upload_url.txt
+      - uses: actions/upload-artifact@v1
+        with:
+          name: create-release
+          path: release_upload_url.txt
+  upload-release:
+    strategy:
+      matrix:
+        target:
+          - x86_64-unknown-linux-gnu
+          - x86_64-pc-windows-gnu
+          - x86_64-apple-darwin
+    needs: [create-release]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v1
+        with:
+          name: create-release
+      - id: upload-url
+        run: |
+          echo "::set-output name=url::$(cat create-release/release_upload_url.txt)"
+      - uses: actions/download-artifact@v1
+        with:
+          name: build-${{ matrix.target }}
+      - uses: actions/upload-release-asset@v1.0.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.upload-url.outputs.url }}
+          asset_path: ./build-${{ matrix.target }}/wasminspect-${{ matrix.target }}.zip
+          asset_name: wasminspect-${{ matrix.target }}.zip
+          asset_content_type: application/zip