Action — actionlint

Validates GitHub Actions workflow files with actionlint.

Usage

steps:
  - uses: actions/checkout@v7

  - uses: KevinDeBenedetti/github-workflows/.github/actions/actionlint@main
    with:
      paths: .github/workflows/

Inputs

Input	Type	Default	Description
paths	string	.github/workflows/	Space-separated list of workflow files or directories to validate
flags	string	''	Extra flags passed to actionlint (e.g. -ignore 'SC2086')

Steps

1. Download and install actionlint 1.7.11 into $RUNNER_TEMP/actionlint
2. Collect all .yml / .yaml files from the given paths
3. Run actionlint [flags] <files>

Notes

• When paths points to a directory, all .yml and .yaml files within it are collected recursively.

• Use flags: '-ignore SC2086' to suppress specific ShellCheck rules that actionlint embeds.

• actionlint is downloaded fresh each run; no system-wide install is required.

• actionlint does not know the ubuntu-26.04 and ubuntu-26.04-arm runner labels yet, and fails a literal runs-on: ubuntu-26.04 as an unknown label. List them in the repository's .github/actionlint.yaml, which actionlint reads by itself, as this repository does:

  self-hosted-runner:
    labels:
      - ubuntu-26.04
      - ubuntu-26.04-arm