Bug: Incorrect or not explicit enough fetch manifest errors

[djkato]

What are you trying to achieve?

To install an app with a self signed certificate TLS

Steps to reproduce the problem

1. set up saleor with apps in docker
2. Use self signed certificates for SSL / TLS in Nginx/Caddy
3. try to install app through public url through dashboard

the api returns either Error code INVALID on field manifestUrl (when url is http) or Error code INVALID_MANIFEST_FORMAT on field manifestUrl (when url is https).

What did you expect to happen?

To actually get more info as to why. Neither of those truly reflect what went wrong. Ideally propagate the whole curl error or something up to the error message.

The actual error was, that I didn't install the root certificate of my app endpoint in Saleor container. Would've had no idea that that's the case, if I handn't entered the container and tried to curl the manifest manually to see the error.

Logs

No response

Environment

Saleor version: 3.19.11
OS and version: docker