[Feature request] Dockerfile - Removing git package #2315

Extracted from https://github.com/drwetter/testssl.sh/pull/2305 (specifically this commit)

Which version are you referring to
Both releases: 3.0.x + 3.1dev

Please check this repo whether this is a known feature request
There was an attempt to PR this. It was closed for proposing too many changes at once.

Describe your feature request (if it's a technical feature)
If the package isn't serving a purpose (except for the similar Dockerfile.git), it would reduce the image weight (which was the main motivation for choosing Alpine).

Describe the solution you'd like
Removing a package if it's not beneficial to the image. Reducing the image size by approx 7MB (19%).

This is just a suggestion based on insights from the closed PR. I'd raise a PR for this, but there is already one active touching that line, so I am documenting the suggestion here.