Supervisord: how to append to $PATH
Solution 1:
This feature has been added to Supervisor back in 2014
environment=PATH="/home/site/environments/master/bin:%(ENV_PATH)s"
see https://github.com/Supervisor/supervisor/blob/95ca0bb6aec582885453899872c60b4174ccbd58/supervisor/skel/sample.conf#L7
See also https://stackoverflow.com/questions/12900402/supervisor-and-environment-variables
Solution 2:
I reviewed the documentation and agree with Dmitry.
The current answer is: supervisor doesn't do this directory, but creating a wrapper script will help.