Setting a priority appears to cause minor outages in certain cases, so we should just avoid setting it on behalf of users and allow them to set this directly.
Dokku uses a few external images for various bits of functionality, but these must be manually updated every so often due to being referenced in code.
By moving the references to Dockerfiles, we can take advantage of dependabot to issue automatic PRs when they are out of date.
This plugin uses a docker-compose based Traefik installation in conjunction with injected container labels to route requests. It only exposes the minimal necessary for routing traffic to docker containers. Users wishing to customize further labels may explore using the docker-options plugin to attach additional labels during the 'deploy' phase.