A new subcommand named `doctor` to detect all the possible problems

[lunny]

A new doctor subcommand could check gitea's running status, it could includes:

• Repositories file system permissions. It could read app.ini to get running user and check if all the repositories could be read/write by the user.
• Repositories Hooks script address. It could check if all the repositories hooks script address is current binary's address.

Welcome to add more.

[guillep2k]

• Repositories under gitea-repositories that are missing from the database, and the other way around.
• authorized_keys script address.
• Assets that are found in data/attachment but are not linked in gitea, and the other way around.
• Automatically detect all running instances.
• Search for app.ini; try to figure out its configuration.

[sapk]

Can you review what functions are already implemented in doctor command to keep progress ?

[sapk]

This command could include #2762

[lunny]

@sapk I have checked one on @guillep2k 's list.

[sapk]

It happen many times that users don't find where are some folder/path used by gitea (like the custom folder). Maybe we could dump those information when running doctor command ?
Edit: Nevermind those are visible in the admin ui.

[guillep2k]

It happen many times that users don't find where are some folder/path used by gitea (like the custom folder). Maybe we could dump those information when running doctor command ?
Edit: Nevermind those are visible in the admin ui.

@sapk I'm sure it won't hurt, anyway.

[guillep2k]

It happen many times that users don't find where are some folder/path used by gitea (like the custom folder). Maybe we could dump those information when running doctor command ?

@sapk #10064 😄

As you've mentioned, the configuration tab in settings is also very useful because oftentimes the users do have Gitea running and they only need to e.g. customize it.

[lunny]

Closed and thanks @guillep2k