This is a Craft 3 / Craft 2 base running on the nginx-php-fpm docker image.

Features:

• Nginx 1.15.x, PHP-FPM 7.2.x, Git 2.11.0
• imageMagick image manipulation library

To run, clone the git repo and run docker-compose up:

$ git clone https://github.com/wyveo/craftcms-docker.git
$ cd craftcms-docker
$ sudo docker-compose up -d

navigate to http:https://<HOSTNAME>/index.php?p=admin to begin installing Craft 3. NOTE: if the above url doesn't work, try navigating to http:https://<HOSTNAME>/admin/install instead.

$ git clone -b craft2 --single-branch https://github.com/wyveo/craftcms-docker.git
$ cd craftcms-docker
$ sudo docker-compose up -d

navigate to http:https://<HOSTNAME>/admin to begin installing Craft 2.

You can access the CraftCMS volume by going to the physical location of the craftcmsdocker_craftcms-data volume.

$ docker volume ls
DRIVER     VOLUME NAME
local      craftcmsdocker_craftcms-data
local      craftcmsdocker_craftcms-logs
local      craftcmsdocker_postgresql-data

$ docker volume inspect craftcmsdocker_craftcms-data
[
  {
    "CreatedAt": "2018-05-17T11:35:52+02:00",
    "Driver": "local",
    "Labels": null,
    "Mountpoint": "/var/lib/docker/volumes/craftcmsdocker_craftcms-data/_data"
    "Name": "craftcmsdocker_craftcms-data",
    "Options": {},
    "Scope": "local"
  }
]

$ cd /var/lib/docker/volumes/craftcmsdocker_craftcms-data/_data

This directory is where the CraftCMS files live, and where you can edit/update/backup whatever you need.