Reduce Docker Image build time

[GeroVanMi]

The Docker image takes a long time to build (>15 minutes). A large portion of this comes down to the python libraries, especially the pytorch dependencies!

We need to find some way to reduce this to a reasonable duration.

• Depends on / Related to #26
• [ ] Create a base-image which is only updated if the requirements or Dockerfile has changed (See this Stackoverflow Post Then create a training image which runs on top of this base image which is re-built everytime.
• [ ] Find a way to cache the installs between runs.
• [ ] Look into poetry

[GeroVanMi]

Nevermind, we'll ditch the Docker image. It's too expensive and a hassle to deal with.