Development Setup and Docker

[PatStevens]

Hello altogether,

I  would like to fix some bugs in prestashop, but I feel a little stupid.
I have cloned out the public Prestashop Repository  (https://github.com/PrestaShop/PrestaShop) and ran a docker-compose up.

After this, of course, the installation scripts run, showing no error messages.

From here, the documentation becomes unclear.

I cannot access the Shop Frontend (localhost:8001), when I try, I'm instantly greeted by an error message:

(1/1) ContextErrorException
Notice: Undefined offset: 0
in ImageRetriever.php line 271
at ImageRetriever->getNoPictureImage(object(Language))in FrontController.php line 1515

Am I supposed to run the /install-dev/ flow?

Well, if I do, it doesn't help either.

What is still missing? Couldn't find much documentation on this.