Creating a personal wiki

Every since I came across the term Digital/Second Brain it kind of stuck in my head, pun intended. I value an open internet where information is freely available for everyone. I want to share all of the knowledge that I gather through my work with the world, hoping someone gets some amount of value from it. If nothing else, at least it serves as a sort of time capsule - a view into my brain at any given time.

Information should be free, both as in beer and as in freedom.

To start gathering some information and dumping everything that I know into digital files I started using Obsidian. It’s a nice tool but very hard to put online for everyone to see. I started looking for alternatives and found mdBook still alive and kicking.

I now host my personal wiki for free on GitHub pages so it’s very easy to update, portable and I can view everything offline as well.


Because I want to be able to just run mdBook everywhere I created a Dockerfile. The Dockerfile spits out an image approximitly 750MB in size (I’m pretty sure I can bring that down a little).

FROM rust:slim
RUN cargo install mdbook --vers ${MDBOOK_VERSION}
VOLUME ["/data"]

A Makefile ensures I don’t have to remember a bunch of commands:

SHELL := bash
.PHONY: build serve stop

  docker build -t mdbook .

  docker run -d --name mdbook --rm -p 3000:3000 -v $(PWD):/data -u $(id -u):$(id -g) -it mdbook mdbook serve -p 3000 -n

  docker stop mdbook

Using my Docker image I can run mdbook init to create a new project.

docker run --rm -v $(pwd):/data -u $(id -u):$(id -g) -it mdbook mdbook init

You can now fill out the book.toml file in the root of your project - you can use mine as a starting point if you want to. To view your new project just execute make serve to make it available on http://localhost:3000.

GitHub Actions

To deploy your mdBook to GitHub Pages you can use a pre-built GitHub Action. Make sure you add the cname option mentioned in the documentation to enable a custom domain.