butler login action

Sets the BUTLER_API_KEY environment variable for use by butler.

Usage

name: my-workflow

on: push

jobs:
  login:
    runs-on: ubuntu-latest
    container: lfdev/butler:latest
    steps:
      - uses: LF/butler-login-action@v1
        with:
          credentials: ${{ secrets.BUTLER_API_KEY }}

The image lfdev/butler from Docker Hub is used in this example, but this action should work in other environments where butler reads the credentials from BUTLER_API_KEY.