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Alpine-based multistage-build version of terragrunt-fmt to be used for CI and other reproducible automations

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Docker image for terragrunt-fmt

Tag License

lint build nightly

All #awesome-ci Docker images

ansible-lint β€’ ansible β€’ awesome-ci β€’ bandit β€’ black β€’ checkmake β€’ eslint β€’ file-lint β€’ gofmt β€’ goimports β€’ golint β€’ jsonlint β€’ kubeval β€’ linkcheck β€’ mypy β€’ php-cs-fixer β€’ phpcbf β€’ phpcs β€’ phplint β€’ pycodestyle β€’ pydocstyle β€’ pylint β€’ terraform-docs β€’ terragrunt-fmt β€’ terragrunt β€’ yamlfmt β€’ yamllint

View Dockerfiles on GitHub.

Available Architectures: amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x

Tiny Alpine-based multistage-build dockerized version of Terraform[1] with the ability to do terraform fmt on Terragrunt files (.hcl). This is achieved by creating a temporary file within the container with an .tf extension and then running terraform fmt on it. Additionally the wrapper has been extended with a -ignore argument to be able to ignore files and directory or wildcards. The image is built nightly against multiple stable versions and pushed to Dockerhub.

[1] Official project: https://github.com/hashicorp/terraform

🐳 Available Docker image versions

Docker

Rolling releaess

The following Docker image tags are rolling releases and are built and updated every night.

nightly

Docker Tag Git Ref terraform Available Architectures
latest master latest amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.3 master 1.3.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.2 master 1.2.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.1 master 1.1.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.0 master 1.0.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.15 master 0.15.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.14 master 0.14.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.13 master 0.13.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.12 master 0.12.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x

Point in time releases

The following Docker image tags are built once and can be used for reproducible builds. Its version never changes so you will have to update tags in your pipelines from time to time in order to stay up-to-date.

build

Docker Tag Git Ref terraform Available Architectures
latest-<tag> tag: <tag> latest amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.3-<tag> tag: <tag> 1.3.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.2-<tag> tag: <tag> 1.2.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.1-<tag> tag: <tag> 1.1.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
1.0-<tag> tag: <tag> 1.0.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.15-<tag> tag: <tag> 0.15.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.14-<tag> tag: <tag> 0.14.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.13-<tag> tag: <tag> 0.13.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x
0.12-<tag> tag: <tag> 0.12.x amd64, i386, arm64, arm/v7, arm/v6, ppc64le, s390x

Where <tag> refers to the chosen git tag from this repository.

πŸ“‚ Docker mounts

The working directory inside the Docker container is /data/ and should be mounted locally to the root of your project.

πŸ’» Usage

Ignore all directories named dev/ and testing/ and everything inside.

$ docker run --rm -v $(pwd):/data cytopia/terragrunt-fmt -recursive -ignore=*/dev/,*/testing/

[INFO] Finding files: find . -not \( -path "./*/dev/*" -o -path "./*/testing/*" \) -name '*.hcl' -type f
terraform fmt -list=true -write=false ./prod/eu-central-1/microservice/terragrunt.hcl
../tmp/terragrunt.hcl.tf
terraform fmt -list=true -write=false ./prod/eu-central-1/infra/terragrunt.hcl
../tmp/terragrunt.hcl.tf

Project and CI integration

Makefile

You can add the following Makefile to your project for easy linting anf fixing of Terragrunt .hcl files.

ifneq (,)
.error This Makefile requires GNU Make.
endif

.PHONY: help lint fix _pull

CURRENT_DIR = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))

# Adjust according to your needs
IGNORE      = */.terragrunt-cache/,*/.terraform/
FMT_VERSION = latest

help:
	@echo "help    Show this help"
	@echo "lint    Exit > 0 if any files have wrong formatting"
	@echo "fix     Fix all .hcl files"

lint: _pull
	docker run --rm -v $(CURRENT_DIR):/data cytopia/terragrunt-fmt:$(FMT_VERSION) \
		-check -diff -recursive -ignore='$(IGNORE)'

fix: _pull
	docker run --rm -v $(CURRENT_DIR):/data cytopia/terragrunt-fmt:$(FMT_VERSION) \
		-write -diff -recursive -ignore='$(IGNORE)'

_pull:
	docker pull cytopia/terragrunt-fmt:$(FMT_VERSION)

Travis CI integration

With the above Makefile in place, you can easily add a Travis CI rule to ensure the Terragrunt code uses correct coding style.

---
sudo: required
language: minimal
services:
  - docker
script:
  - make lint

πŸ”„ Related #awesome-ci projects

Docker images

Save yourself from installing lot's of dependencies and pick a dockerized version of your favourite linter below for reproducible local or remote CI tests:

GitHub DockerHub Type Description
awesome-ci aci-hub-img Basic Tools for git, file and static source code analysis
file-lint flint-hub-img Basic Baisc source code analysis
linkcheck linkcheck-hub-img Basic Search for URLs in files and validate their HTTP status code
ansible ansible-hub-img Ansible Multiple versions and flavours of Ansible
ansible-lint alint-hub-img Ansible Lint Ansible
gofmt gfmt-hub-img Go Format Go source code [1]
goimports gimp-hub-img Go Format Go source code [1]
golint glint-hub-img Go Lint Go code
eslint elint-hub-img Javascript Lint Javascript code
jsonlint jlint-hub-img JSON Lint JSON files [1]
kubeval kubeval-hub-img K8s Lint Kubernetes files
checkmake cm-hub-img Make Lint Makefiles
phpcbf pcbf-hub-img PHP PHP Code Beautifier and Fixer
phpcs pcs-hub-img PHP PHP Code Sniffer
phplint plint-hub-img PHP PHP Code Linter [1]
php-cs-fixer pcsf-hub-img PHP PHP Coding Standards Fixer
bandit bandit-hub-img Python A security linter from PyCQA
black black-hub-img Python The uncompromising Python code formatter
mypy mypy-hub-img Python Static source code analysis
pycodestyle pycs-hub-img Python Python style guide checker
pydocstyle pyds-hub-img Python Python docstyle checker
pylint pylint-hub-img Python Python source code, bug and quality checker
terraform-docs tfdocs-hub-img Terraform Terraform doc generator (TF 0.12 ready) [1]
terragrunt tg-hub-img Terraform Terragrunt and Terraform
terragrunt-fmt tgfmt-hub-img Terraform terraform fmt for Terragrunt files [1]
yamlfmt yfmt-hub-img Yaml Format Yaml files [1]
yamllint ylint-hub-img Yaml Lint Yaml files

[1] Uses a shell wrapper to add enhanced functionality not available by original project.

Makefiles

Visit cytopia/makefiles for dependency-less, seamless project integration and minimum required best-practice code linting for CI. The provided Makefiles will only require GNU Make and Docker itself removing the need to install anything else.

πŸ“„ License

MIT License

Copyright (c) 2019 cytopia