API-Testsetup, aber mit Docker

wirklich nur um das API zu testen. ATM implementiert: machine::read

Use included config.toml, or
generate a sample config.toml by running "docker run registry.gitlab.com/fabinfra/fabaccess/bffh:dev-latest --print-default > config.toml". You may have to delete the ipv6 listen section.
1. change mqtt-server hostname to mqtt in config.toml
2. change machines path to /etc/bffh/machines.toml
run docker-compose up