外部データベースのENV変数が未記載(外部PGポート、外部Redis ENV変数)

You can see all of the possible global vars documented at:

You can pass in config from your environment, all the settings below are available.
Append DISCOURSE_ and upper case the setting in ENV. For example:
to pass in db_timeout of 200 you would use DISCOURSE_DB_TIMEOUT=200

「いいね!」 3