Bedrocker is an integration of Bedrock and Docker. It makes use of the existing official WordPress image and therefore automatically gets WP updates.
To implement your installation using this image, create your own Dockerfile using this as the base image, like so:
FROM squareweave/bedrocker
The project installs Bedrock into /app, and sets the Apache webroot to be /app/web. WordPress is installed (as you would expect) to /app/web/wp.
wp-cli is installed as the command wp, and you can run this by docker exec -ti [name of your container] wp. Composer is installed as composer, and you can run that in a similar fashion.
Example of using composer in your build:
FROM squareweave/bedrocker
COPY composer.json composer.lock /app/
RUN composer install && composer clear-cache
Note: To get the benefit of upstream WordPress updates, it's important that you remove the following requirement/s (if they're present) from your composer.json:
"johnpbloch/wordpress": "...."
"johnpbloch/wordpress-core-installer": "...."
To add themes, plugins, etc, all you need to do is COPY those into your project. An easy way to do this is to have an app directory in your project which is copied into the /app
Example of copying app/themes to your container during build:
FROM squareweave/bedrocker
COPY app/themes /app/web/app/themes