I moved the /application directory to /opt/docker-substantiator/application.
I also changed the line in index.php to:
$application_folder = '/opt/docker-substantiator/application';
When I type localhost in my browser I now get:
Your application folder path does not appear to be set correctly. Please open the following file and correct this: index.php
Any idea what went wrong?
proof that an old dog can learn new tricks
