GitHub Action linting Terraform files

GitHub Action that will run TFlint on Terraform files.

Dockerized as devopsinfra/action-tflint.

Uses the newest version of Terraform and TFLint for the current release.

So it's main use will be everywhere where Terraform is used and is great for statically or actively checking modules' sources.

Main action is using wata727's TFLint.

Badge swag

Reference

    - name: Run the Action
      uses: devops-infra/action-tflint@v0.3
      with:
        dir_filter: modules

Input Variable	Required	Default	Description
dir_filter	No	`*`	Prefixes or sub-directories to search for Terraform modules. Use comma as separator.
fail_on_changes	No	`true`	Whether TFLint should fail whole action.
tflint_config	No	`.tflint.hcl`	Location from repository root to TFLint config file. Disables `tflint_params`.
tflint_params	No	``	Parameters passed to TFLint binary. See TFLint for details.
run_init	No	`true`	Whether the action should run `terraform init`. Defaults to true.

Examples

By default fail if lint errors found in any subdirectory. Run the Action via GitHub.

name: Check TFLint
on:
  push:
    branches:
      - "**"
jobs:
  format-hcl:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v2
    - name: Check linting of Terraform files
      uses: devops-infra/action-tflint@v0.3

Use different location for TFLint config file and parse only aws* and gcp* modules in modules/ directory. Run the Action via GitHub.

name: Check TFLint with custom config
on:
  push:
    branches:
      - "**"
jobs:
  format-hcl:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v2
    - name: Check linting of Terraform modules
      uses: devops-infra/action-tflint@v0.3
      with:
        tflint_config: modules/.tflint.hcl
        dir_filter: modules/aws,modules/gcp

Use deep check (need cloud credentials) and treat all directories under modules as Terraform modules. Run the Action via DockerHub.

name: Check TFLint with custom config
on:
  push:
    branches:
      - "**"
jobs:
  format-hcl:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v2
    - name: Check linting of Terraform modules
      uses: devops-infra/action-tflint@v0.3
      with:
        tflint_params: "--module --deep"
        dir_filter: modules