App

In this README, you should explain, if applicable, the following :

• What is this
• Is it based on a base image, is it a custom Dockerfile based on another Dockerfile, or a brand new Dockerfile
• How to configure (secrets, environment variables...)
• How to start (usually just a docker-compose up -d and copying the secret files : this is the goal)
• How to update the service itself (usually just changing a tag in the Docker Compose file and an argument in the Dockerfile)
• How to update the customization of the service : add more environment variables, change configuration, etc.
• How to administrate the service (e.g. CLI tool)
• Warnings about breaking changes (e.g. "you cannot update the database to a major version without doing this or that")

And everything that you find useful.

This README should act as a reference for all administration tasks.

However it should not contain user documentation, nor general advices about how to resolve build errors and so on.