Problem running nginx in a container

[marioja2]

It took a while and it was starting at me in the face but I did figure it
out.  The script that starts the container would make changes to some
php-fpm7 (fastcgi process manager) after it got started.  Obviously, this
did not take effect until the restart of the container.  This explains the
difference in behaviour.  Thanks Francis Daly for all your insightful
comments.  Not being familiar with nginx I would have never figured it out
without your input.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,293592,293656#msg-293656