The cronjob tries to get key from `mastodon` secret instead of
`mastodon-postgresql` - so the cronjob fails with this error:
Error: couldn't find key postgresql-password in Secret [NS]/mastodon
Another solution is to save the postgres password in mastodon secret,
but that means that the password is placed in two places.
Postgresql use <fullname>-postgresql name as secret name.
* add Helm chart
known issues/future work:
- SSO is unsupported
- S3/Minio/GCS is unsupported
- Swift is unsupported
- WEB_DOMAIN is unsupported
- Tor is unsupported
* helm: clarify how LOCAL_DOMAIN is set
* helm: add chart description
* helm: make DB_POOL and Sidekiq concurrency configurable
* helm: only enforce pod affinity when using ReadWriteOnce
* helm: clarify compatibility
* helm: clean up application variables
* helm: add job to create initial admin
