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Rebuilds README.md and associated banners from templates using the README.yaml metadata.


Note

This project is part of Cloud Posse's comprehensive "SweetOps" approach towards DevOps.

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It's 100% Open Source and licensed under the APACHE2.

We have dozens of GitHub Actions that are Open Source and well-maintained. Check them out!

Introduction

This opinionated implementation builds upon Cloud Posse's build-harness and README.yaml used throughout Cloud Posse's GitHub repositories.

Usage

Important

In Cloud Posse's examples, we avoid pinning GitHub Actions to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each GitHub Action to the exact version you're using. This practice ensures the stability of your workflows. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

To use this project, follow these steps:

Add the following code to your workflow file (e.g., .github/workflows/readme.yml):

name: READMEon:
pull_request:
branches: [ 'main' ]types: [opened, synchronize, reopened, closed, labeled, unlabeled]jobs:
generate:
runs-on: ubuntu-lateststeps:
- name: Rebuild README.md and Banneruses: cloudposse-github-actions/readme@v0id: readmewith:
banner_enabled: truereadme_enabled: trueoutputs:
banner_file: ${{ steps.readme.outputs.banner_file }}readme_file: ${{ steps.readme.outputs.readme_file }}

Advanced Usage

In the following example, we use the workflow_dispatch event to allow manual triggering of the workflow to rebuild the readme.
We also use the pull_request event to register the workflow from the PR. This allows us to test the workflow before merging it to the main branch.

name: READMEon:
# Allow manual triggering of workflow to rebuild readmeworkflow_dispatch: {}## Added pull_request to register workflow from the PR.## Read more https://stackoverflow.com/questions/63362126/github-actions-how-to-run-a-workflow-created-on-a-non-master-branch-from-the-wopull_request:
branches-ignore: ['*']schedule:
# Update README.md nightly at 4am UTC# .---------------- minute (0 - 59)# | .------------- hour (0 - 23)# | | .---------- day of month (1 - 31)# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat# | | | | |
- cron: '0 4 * * *'jobs:
generate:
runs-on: ubuntu-lateststeps:
- name: Rebuild README.md and Banneruses: cloudposse-github-actions/readme@v0id: readmewith:
banner_enabled: truereadme_enabled: true

Migrating from v0 to v1

v1 use atmos instead of build-harness. You can drop Makefile if you use it only for readme generation. To support atmos reaadme generation, you must create atmos.yaml config. The configuration depends on your repo - please follow this documentation

Example:

docs:
generate:
readme:
base-dir: .input:
- "./README.yaml"template: "https://.../README.md.gotmpl"output: "./README.md"terraform:
source: src/enabled: falseformat: "markdown"show_providers: falseshow_inputs: trueshow_outputs: truesort_by: "name"hide_empty: falseindent_level: 2

Inputs

NameDescriptionDefaultRequired
atmos-versionThe version of atmos to install>= 1.175.0false
banner_enabledEnable banner generationtruefalse
commandAtmos command to generate readmedocs generate readmetrue
commit_authorThe author to use when committing changes.readme-action 📖 actions@github.comfalse
commit_messageThe commit message to use when committing changes.chore: update README.mdfalse
commit_methodThe method to apply changes. Can be either 'commit' or 'pr'.committrue
commit_push_optionsThe push options to use when committing changes. Use --force-with-lease to avoid overwriting changes when pushing
to a protected branch using admin or bypass privileges. See https://git-scm.com/docs/git-push#\_options for more.
false
commit_user_emailThe user email to use when committing changes.actions@github.comfalse
commit_user_nameThe user name to use when committing changes.readme-action 📖false
pr_base_branchRepo default base-branch for Pull Requests (when commit_method: pr)false
pr_branchBranch to create Pull Requests from (when commit_method: pr). Suggest using a protected branch for auto-merge capabilities.auto-update/readmefalse
pr_labelsWhitespace-separated list of labels to apply to Pull Requests (when commit_method: pr or ( commit_method: commit and github context is a PR) ))auto-update
no-release
readme
false
pr_titleThe title to use when creating a Pull Request (when commit_method: pr)Update README.md and docsfalse
readme_enabledEnable README generationtruefalse
repository_descriptionGitHub repository descriptionfalse
repository_nameGitHub repository name in the repository\_org that hosts the banner templatesfalse
repository_orgGitHub organization or user name used for the banner templatesfalse
sign-commitsSign commits for pr commit_method as github-actions[bot] when using GITHUB\_TOKEN, or your own bot when using GitHub App tokens.falsefalse
tokenGitHub API token (use a PAT if you need to trigger other actions)${{ github.token }}false
validate_readmeValidate the README.md file using markdown-link-checktruefalse

Outputs

NameDescription
banner_fileGenerated banner file path (if banner_enabled: true)
changes_detectedChanges detected
readme_fileGenerated README file path (if readme_enabled: true)

Related Projects

Check out these related projects.

References

For additional context, refer to some of these links.

✨ Contributing

This project is under active development, and we encourage contributions from our community. Many thanks to our outstanding contributors:

🐛 Bug Reports & Feature Requests

Please use the issue tracker to report any bugs or file feature requests.

💻 Developing

If you are interested in being a contributor and want to get involved in developing this project or help out with Cloud Posse's other projects, we would love to hear from you! Hit us up in Slack, in the #cloudposse channel.

In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

  1. Review our Code of Conduct and Contributor Guidelines.
  2. Fork the repo on GitHub
  3. Clone the project to your own machine
  4. Commit changes to your own branch
  5. Push your work back up to your fork
  6. Submit a Pull Request so that we can review your changes

NOTE: Be sure to merge the latest changes from "upstream" before making a pull request!

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Join our Open Source Community on Slack. It's FREE for everyone! Our "SweetOps" community is where you get to talk with others who share a similar vision for how to rollout and manage infrastructure. This is the best place to talk shop, ask questions, solicit feedback, and work together as a community to build totally sweet infrastructure.

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About

This project is maintained by Cloud Posse, LLC.

We are a DevOps Accelerator for funded startups and enterprises. Use our ready-to-go terraform architecture blueprints for AWS & GitHub Actions to get up and running quickly. We build it with you. You own everything. Your team wins. Plus, we stick around until you succeed.

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Your team can operate like a pro today.

Ensure that your team succeeds by using our proven process and turnkey blueprints. Plus, we stick around until you succeed.

📚 See What's Included
  • Reference Architecture. You'll get everything you need from the ground up built using 100% infrastructure as code.
  • Deployment Strategy. You'll have a battle-tested deployment strategy using GitHub Actions that's automated and repeatable.
  • Site Reliability Engineering. You'll have total visibility into your apps and microservices.
  • Security Baseline. You'll have built-in governance with accountability and audit logs for all changes.
  • GitOps. You'll be able to operate your infrastructure via Pull Requests.
  • Training. You'll receive hands-on training so your team can operate what we build.
  • Questions. You'll have a direct line of communication between our teams via a Shared Slack channel.
  • Troubleshooting. You'll get help to triage when things aren't working.
  • Code Reviews. You'll receive constructive feedback on Pull Requests.
  • Bug Fixes. We'll rapidly work with you to fix any bugs in our projects.

License

License

Preamble to the Apache License, Version 2.0

Complete license is available in the LICENSE file.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.

Trademarks

All other trademarks referenced herein are the property of their respective owners.

Copyright © 2017-2025 Cloud Posse, LLC

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