Well, I can surely see the need for it.
Anyway, is $config['base_url'] = 'http://localhost'; the same as setting document root to /localhost?
I didn't find document root in the CI documentation search.
I have set the index.php line to
$application_folder = '~/opt/docker-substantiator/application';
$application_folder = '../opt/docker-substantiator/application';
$application_folder = '../application';
But they all yield
our application folder path does not appear to be set correctly. Please open the following file and correct this: index.php
Where is this message coming from? Perhaps I could debug it?
proof that an old dog can learn new tricks