Rewrite env solution, update compose, and add dependency

[Herkarl]

Turned out that the node https package did not play well with the compose networks, so changed it to fetch, which required installing a package, since the node version was too old for it to be included (and upgrading turned out to be more involved than changing the version in the Dockerfile, so I decided not to). :slightly_smiling_face:

Could probably survive without setting env-vars on prod, but we probably want to

[foodelevator]

upgrading turned out to be more involved than changing the version in the Dockerfile

Gråter i promise som aldrig resolvar

[Herkarl]

Added the missing env-vars to dokku