[docs] debian package repo: HTTP response status for duplicate package is 400, not 409

[a-stangl]

Description

It appears that the docs for the Debian package registry are not 100% correct.

According to the Publish a Package section, the HTTP response code, in case a package file with the same combination of parameters exists already, is supposed to be 409 Conflict.

In fact, the API returns 400 Bad Request (routers/api/packages/debian/debian.go:192).

curl example:

curl --no-progress-meter \
    --user <my-user>:<my-token> \
    --upload-file /tmp/some-package.deb \
    -i \
    https://my-gitea-instance/api/packages/owner/debian/pool/distribution/main/upload

HTTP/2 400 
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-type: text/plain;charset=utf-8
date: Fri, 06 Oct 2023 08:16:12 GMT
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-content-type-options: nosniff
x-frame-options: sameorigin
x-xss-protection: 1; mode=block
content-length: 27

package file already exists

There's nothing relevant in the logs.

Gitea Version

1.20.5

Can you reproduce the bug on the Gitea demo site?

No

Log Gist

No response

Screenshots

No response

Git Version

2.34.1

Operating System

Ubuntu 22.04.3 LTS

How are you running Gitea?

Docker image gitea/gitea:latest

Database

PostgreSQL