This repo contains a couple of example files so that you can get up and running with a self-hosted Ghost blog using Docker in a matter of minutes.
This resource is a companion to Self Hosted episode 4.
Utilise the docker-compose.yaml file with docker-compose up -d and install the nginx config file in your sites-confs directory. Full guides available on blog.linuxserver.io along with a PUID and PGID explanation too.