Installing codeigniter

I have the /application directory with all of my CI application. Other than the application directory does anything need to installed to make a CI application run?

proof that an old dog can learn new tricks

I have the /application directory with all of my CI application. Other than the application directory does anything need to installed to make a CI application run?

If you are trying CI4 then make sure the writable directory permissions are writable. 

I am not sure if this effects CI3.

Failure to set the above permissions will result in a "Whoops" screen with no helpful suggestions to resolve the issue.

Hi richb201,
i'm not sure to understand it well, but if all you have is the /application directory, yes, you need "all the rest".

Have you tried to simply install a fresh copy of CI4, then move your files inside the corresponding directories within /application?

It is a little more complicated since this is a docker container. I actually backed up one more dir (../) and I think now I included system plus other dirs.

proof that an old dog can learn new tricks