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GitHub Action to deploy an MkDocs site to GitHub Pages

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This GitHub action will deploy your MkDocs site as GitHub Pages, using the Material theme. It assumes that an mkdocs.yml file is present in the top-level directory and the source files (Markdown, etc.) are in the docs/ folder. You can use mhausenblas/mkdocs-template as a template.

Before you start, make sure you enable GitHub pages via the repo settings.

There are two methods for generating and building your gh-pages branch: use either a PERSONAL_TOKEN which is loaded with a personal access token containing repo privileges, or using GITHUB_TOKEN which is a token provided by the GITHUB API with sufficient privileges to perform repo-related operations.

Building with PERSONAL_TOKEN

Generate a personal access token (scope repo) and create a secret in your repository settings with the name PERSONAL_TOKEN and the value of the token generated.

Note that this is an account-level token that has access to update any repo owned by you, so be sure to avoid sharing it.

Building with GITHUB_TOKEN

This action supports building and deploying with a GITHUB_TOKEN. This token is automatically generated by Github Actions when a workflow runs so it is convenient.

It is more secure than a personal token, since you never actually see the value of the GITHUB_TOKEN and also the GITHUB_TOKEN is scoped to only work for a single repo.

Note that for this approach, Github Pages will be enabled in Settings but you will not have a URL displayed or environment tab yet. So change the Github Pages settings to another target and then back again to gh-pages (if that is your branch to serve) - then you will see a URL. This step is only needed on the first deploy and no action is needed later on.

Custom domain for github pages

MkDocs can be deployed to github pages using a custom domain, if you populate a CUSTOM_DOMAIN environment variable. This will generate a CNAME file, which will be placed inside the /docs folder.

https://www.mkdocs.org/user-guide/deploying-your-docs/#custom-domains

Example usage

name: Publish docs via GitHub Pages
on:
  push:
    branches:
      - master

jobs:
  build:
    name: Deploy docs
    runs-on: ubuntu-latest
    steps:
      - name: Checkout master
        uses: actions/checkout@v1

      - name: Deploy docs
        uses: mhausenblas/mkdocs-deploy-gh-pages@master
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          CUSTOM_DOMAIN: optionaldomain.com

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GitHub Action to deploy an MkDocs site to GitHub Pages

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