How to automate GitHub releases via GitHub Actions

release.yml

name: Release

on:
  push:
    tags: ["**"]

jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: softprops/action-gh-release@v1
        with:
          body: |
            See the [changelog](https://github.com/${{ github.repository }}/blob/${{ github.sha }}/CHANGELOG.md) for more details.
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

https://help.github.com/en/articles/contexts-and-expression-syntax-for-github-actions

Put the file to .github/workflows/.

https://github.com/softprops/action-gh-release