:beetle: Fix wrong path in Dockerfile.

[JonasGilg]

Description

There was a wrong path in the docker setup. Which appeared after switching to vite.

I, the reviewer checked the following things:

• [ ] I ran the software once and tried all new and related functionality to this PR
• [x] I looked at all new and changed lines of code and commented on possible problems
• [x] I read the added documentation and checked if it is understandable and clear
• [x] I checked the added tests for completeness
• [x] I checked the internationalized strings for spelling errors
• [x] I checked the performance metrics for problems or unexplained degradation
• [x] I checked that the changes are noted in the changelog