DB backup config error

[gerhard (Gerhard Schlager)]

@netpositive

If I manually run the pg_dump command inside the container then it works flawlessly

You could try running the same command Discourse uses for dumps. You can get it by executing the following inside the container:

rails c
BackupRestore::Backuper.new(Discourse.system_user.id, {}).send(:pg_dump_command)