absolutely set these before start the instance for the first time:
- NEODB_SECRET_KEY - 50 characters of random string, no white space
- NEODB_SITE_NAME - the name of your site
- NEODB_SITE_DOMAIN - the domain name of your site
`NEODB_SECRET_KEY` and `NEODB_SITE_DOMAIN` must not be changed later.
if you are doing debug or development:
- NEODB_DEBUG - True will turn on debug for both neodb and takahe, turn off relay, and reveal self as debug mode in nodeinfo (so peers won't try to run fedi search on you)
- NEODB_IMAGE - the docker image to use, `neodb/neodb:edge` for the main branch