This action executes yamllint (https://github.com/adrienverge/yamllint) against file(s) or folder

• config_file - Path to custom configuration
• config_data - Custom configuration (as YAML source)
• file_or_dir - Enter file/folder (space separated), wildcards accepted. Examples:
  • . - run against all yaml files in a directory recursively (default)
  • file1.yaml
  • file1.yaml file2.yaml
  • kustomize/**/*.yaml mychart/*values.yaml
• format - Format for parsing output [parsable,standard,colored,auto]
• strict - Return non-zero exit code on warnings as well as errors [true,false]

name: Yaml Lint
on: [push]
jobs:
  lintAllTheThings:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    - name: yaml-lint
      uses: ibiqlik/action-yamllint@master
      with:
        file_or_dir: myfolder/*values*.yaml
        config_file: .yamllint.yml

Or just simply check all yaml files in the repository:

name: Yaml Lint
on: [push]
jobs:
  lintAllTheThings:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    - name: yaml-lint
      uses: ibiqlik/action-yamllint@master