Docker Docsify PDF

This project is based on meff34/docsify-to-pdf-converter repository.

Features

• Custom icons
• Codeblocks
• Table of contents (auto-generated)
• Multilingual support (multiple sidebars)
• PDF cover page
• PlantUML (.puml) diagrams
• SVG support

All improvements and fixes from original repository are here.

Screenshots

Usage

First, create a documentation in a docs directory (like the repository example).
You need a _sidebar.md¹.

Pull the image and create output directory :

docker pull ghcr.io/kernoeb/docker-docsify-pdf:latest
mkdir -p $(pwd)/pdf

Run the container (volumes are mandatory) :

docker run --rm -it \
  --cap-add=SYS_ADMIN \
  --user $(id -u):$(id -g) \
  -v $(pwd)/docs:/home/node/docs:ro \
  -v $(pwd)/pdf:/home/node/pdf:rw \
  -v $(pwd)/resources/covers/cover.pdf:/home/node/resources/cover.pdf:ro \
  -e "PDF_OUTPUT_NAME=DOCUMENTATION.pdf" \
  ghcr.io/kernoeb/docker-docsify-pdf:latest

And voilà ! 🎉

---

You can use zx to generate the PDF in one command : zx README.md.

You can also add custom js files (plugins) :

-v $(pwd)/resources/js/thing.js:/home/node/resources/js/thing.js:ro

All the resources can be replaced (images, css, js, ...) as well
It can be useful if you want to change the CSS theme

The PDF cover is optional : just remove the mapping on the command.

Differences from original repository

• Fix :
  • Slugify / internal URL (some URLs were not properly encoded)
  • localhost links are now disabled
  • Codeblocks (some code blocks were sliced)
  • Better margins in the final PDF
  • Page breaks between sections
  • If an image was used multiple times in the same section, it was not working
• Security / performance :
  • Update dependencies (Puppeteer, Docsify, ...)
  • Docker container is running with current user rights (optional)
• Feats :
  • Table of content (based on sidebar)
  • Custom cover PDF page
  • Docker way to generate PDF
  • Highlight code blocks (with PrismJS)
  • Multilingual support
  • Font Awesome icons support, example : {{fa cog}}
  • PlantUML diagrams support (see the example in docs directory)
  • SVG support
• Chore :
  • Migration to pnpm (no more npm)
  • Clean code with standard ESLint
  • Remove useless stuff

Troubleshooting

If you have this error : System limit for number of file watchers reached or Error: EMFILE: too many open files :

echo fs.inotify.max_user_watches=1048576 | sudo tee -a /etc/sysctl.conf && sudo sysctl --system
echo fs.inotify.max_user_instances=512 | sudo tee -a /etc/sysctl.conf && sudo sysctl --system

cf. StackOverflow

Footnotes

1. To change _sidebar.md location (e.g for multi-language support), add -v $(pwd)/docs/de/_sidebar.md:/home/node/docs/_sidebar.md:ro to the command ↩