Add automated release artifacts for tags

This commit adds builds for tag pushes. Instead of uploading a single
build ZIP to the actions result, it:
- Creates a new draft GitHub release with GitHub's own automatically-
  generated release notes.
- Marks the release as a prerelease if it includes `-pre` or starts with
  `v0`.
- Attaches each release ZIP to the release as an artifact.

.github/workflows/build.yml

@@ -5,6 +5,8 @@ on:
  push:
  branches:
  - main
+ tags:
+ - v*
 
 jobs:
  build:
@@ -23,23 +25,32 @@ jobs:
  cache: "yarn"
  - run: yarn install --frozen-lockfile
  - name: Dev build
- if: github.ref != 'refs/heads/main' && !startsWith(github.head_ref, 'release-')
+ if: github.ref != 'refs/heads/main' && !startsWith(github.ref, 'refs/tags/')
  run: yarn build
  env:
  ALCHEMY_KEY: ${{ secrets.DEV_ALCHEMY_API_KEY || 'oV1Rtjh61hGa97X2MTqMY9kEUcpxP-6K' }}
  BLOCKNATIVE_API_KEY: ${{ secrets.DEV_BLOCKNATIVE_API_KEY || 'f60816ff-da02-463f-87a6-67a09c6d53fa' }}
  - name: Production build
- if: github.ref == 'refs/heads/main' || startsWith(github.head_ref, 'release-')
+ if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')
  run: yarn build
  env:
  ALCHEMY_KEY: ${{ secrets.ALCHEMY_API_KEY }}
  BLOCKNATIVE_API_KEY: ${{ secrets.BLOCKNATIVE_API_KEY }}
  ZEROX_API_KEY: ${{ secrets.ZEROX_API_KEY }}
  - name: Upload build asset
+ if: ${{ !startsWith(github.ref, 'refs/tags/') }}
  uses: actions/upload-artifact@v2
  with:
  name: extension-builds
  path: dist/*.zip
+ - name: Create Release and Upload Artifacts
+ uses: softprops/action-gh-release@1e07f4398721186383de40550babbdf2b84acfc5 # v1
+ if: startsWith(github.ref, 'refs/tags/')
+ with:
+ files: dist/*.zip
+ draft: true
+ generate_release_notes: true
+ prerelease: ${{ contains(github.ref, '-pre') || contains(github.ref, 'v0.') }}
  test:
  runs-on: ubuntu-latest
  steps: