+ You can now start the app in a container by running `npm run start:containers` (and shut it down with `npm run stop:containers`).
* Running
+ The app will run in a single container, with a Postgres database, a caddy webserver and the nodejs app.
+ Note that the container doesn't come with a volume for Postgres: default behaviour is to start from scratch every time you create the container, delete everything every time you delete the container.
+ The docker image launches the nodejs app with nodemon, so changes to the code will be available immediately.