Merge branch '520-documentation' into 'develop'

Resolve "Envsubst : too many arguments when installing"

Closes #520

See merge request funkwhale/funkwhale!401
8 jobs for develop in 5 minutes and 32 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Review
manual #9722
funkwhale-review allowed to fail manual
review_docs
manual #9720
funkwhale-review allowed to fail manual
review_front
manual #9723
funkwhale-review allowed to fail manual
stop_docs_review
manual #9721
funkwhale-review allowed to fail manual
stop_front_review
 
  Lint
passed #9724
black

00:00:29

passed #9725
flake8

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  Test
passed #9726
docker
test_api

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passed #9727
docker
test_front

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