Added missing dependencies for docker build

[eldur]

tried with
% docker build --no-cache -t fava .

[hosiet]

Two issues:

• Please use apt-get instead of apt for non-interactive operation.
• Please clean up apt caches upon completion to reduce final image size.

It should be something like:

RUN apt-get update && apt-get install -y \ package1 \ package2 \ && rm -rf /var/lib/apt/lists/* 

[yagebu]

I think we could also just stick to Python 3.13 for now, for which wheels of Beancount exist right now, which should avoid all these dependencies.