self hosted wiki in multiple languages

Hello, I'm Dutch but living in France where I do help people with their problems, computer related. Because I have a reasonable experience, I want to publically create a wiki in multiple languages like Dutch, French and English. A knowledge base with tips and tricks for the common user. I do have a Ubuntu server with a registered domain name, docker, portainer, nginx, cloudflare. I'm looking for a wiki docker which only certified users can modify and the rest, can read. I've already looked but can't find on