Dockerized working web app I can build off of? (that supports users who can post content)

I mean that instead of just cloning a project from GitHub but having to install MySQL myself, configure it, create tables, and then create code for standard things like a user signing up, a user logging out, a user posting content, etc. I’m hoping for an entire dev environment I can simply test as a Dockerfile that already has the tables set up in MySQL and I can immediately run via Docker and immediately start extending.