Docker examples are broke. Are they for dev or prod?

[gjmulder]

By reorganising the Dockerfiles I broke the install for the simple Dockerfiles, as they copy the repo from the current dir into the image, but they're now located in a subdir. Docker builds can't copy files from a parent directory AFAIK.

Do we want to either:

pip install the latest llama-cpp-python package in this Dockerfiles so that they are the most minimal install

or:

Install the latest commit of llama-cpp-python?

If the second option is chosen then a better way is to git clone https://github.com/abetlen/llama-cpp-python.git as part of the docker build, as then there's no dependency on where the Dockerfile is located.

[gjmulder]

Proposed solution in #310