After playing with a lot of gems and ruby dependencies on DO drop install, having this issue.
Rails Error: Unable to access log file. Please ensure that /var/lib/docker/aufs/mnt/xx/var/www/discourse/log/production.log exists and is chmod 0666. The log level has been raised to WARN and the output directed to STDERR until the problem is fixed. /var/lib/docker/aufs/mnt/xx/var/www/discourse/vendor/bundle/ruby/2.1.0/gems/activerecord-4.1.5/lib/active_record/connection_adapters/postgresql_adapter.rb:888:in `initialize': FATAL: Peer authentication failed for user "discourse" (PG::Error)
while running this command to import the csv from vbulletin.
RAILS_ENV=production ruby vbulletin.rb --user-group forum_usergroup.csv --user forum_user.csv --forum forum_forum.csv --forum-permission forum_forumpermission.csv --thread forum_thread.csv --post forum_post.csv