name: Shellcheck
on:
  push:
    branches:
      - main
  pull_request:

# Abort runs of *this* workflow, if a new commit with the same ref is pushed.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  shellcheck:
    name: Shellcheck
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Run ShellCheck
        uses: ludeeus/action-shellcheck@master
        with:
          severity: error
          ignore_names: merge_config.sh