fix: ci docker build

[Freyskeyd]

Description

Fixing the CI docker build

PR Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[atanmarko]

I don't really understand the changes here, I think better for tools team to review it

[sebastiendan]

Approved, but would be great to have clear descriptions to understand what the issue was and how the fix solved the problem.

[gruberb]

I think I removed the Extract metadata in my last PR. I thought we don't need it anymore. Sorry!

The broadcast_channel I assume is just a cleanup?

[dvdplm]

@Freyskeyd CI seems angry but it's not clear (to me) what the problem is. :/