This Docker image contains a copy of ruby and the GitHub Pages dependencies.
To use this repository issue the following command from the directory where you are working on your GitHub Pages repository:
docker run --rm --interactive --tty --volume .:/home --pubish 4000:4000 --env JEKYLL_GITHUB_TOKEN=$JEKYLL_GITHUB_TOKEN jsware/github-pages
The image will start and server the GitHub Pages site from the current directory (mapped to /home in the container). When files are changed it will regenerate the site.
The same command can be run with shorter options:
docker run --rm -it -v .:/home -p 4000:4000 -e JEKYLL_GITHUB_TOKEN=$JEKYLL_GITHUB_TOKEN jsware/github-pages
If you do not need GitHub credentials for your repository, you may remove the --env JEKYLL_GITHUB_TOKEN=$JEKYLL_GITHUB_TOKEN argument.
These commands assume your GitHub token for Jekyll is in an environment variable called JEKYLL_GITHUB_TOKEN. You could use --env-file to specify an environment variable file instead.