docker: PODCAST_ARCHIVER_ARCHIVE_DIRECTORY envvar set in Dockerfile takes precedence over config file

[jpluscplusm]

Hi there 👋 Thanks for making this project - I'm finding it really useful!

I've noticed that because the PODCAST_ARCHIVER_ARCHIVE_DIRECTORY envvar is set inside the published image's Dockerfile, any archive_directory setting placed in a config file that's included in a running container is ignored.

I know this can be overridden by setting the PODCAST_ARCHIVER_ARCHIVE_DIRECTORY envvar for the running container, but it did surprise me a little that this one config file setting is ineffective. It feels a bit odd to have this single setting not achieve anything, in a containerised context!

Thanks again for podcast-archiver!