Add a docker image

[marph91]

TODO

• Reduce image size (currently ~500 MB)
  • https://www.reddit.com/r/docker/comments/1f1wqnb/how_i_reduced_docker_image_size_from_588_mb_to/
  • Switched from debian to alpine and did a multistage build. Still ~300 MB, but there is probably not much to do:

$ docker history 3e724896369b
IMAGE          CREATED          CREATED BY                                      SIZE      COMMENT
3e724896369b   16 minutes ago   ENTRYPOINT ["python" "/jimmy/jimmy/jimmy_cli…   0B        buildkit.dockerfile.v0
<missing>      16 minutes ago   ENV COLUMNS=160                                 0B        buildkit.dockerfile.v0
<missing>      16 minutes ago   COPY /jimmy/bin /jimmy/bin # buildkit           162MB     buildkit.dockerfile.v0
<missing>      16 minutes ago   COPY /jimmy/jimmy /jimmy/jimmy # buildkit       426kB     buildkit.dockerfile.v0
<missing>      16 minutes ago   ENV PATH=/opt/venv/bin:/usr/local/bin:/usr/l…   0B        buildkit.dockerfile.v0
<missing>      16 minutes ago   COPY /opt/venv /opt/venv # buildkit             122MB     buildkit.dockerfile.v0
<missing>      12 days ago      CMD ["python3"]                                 0B        buildkit.dockerfile.v0
<missing>      12 days ago      RUN /bin/sh -c set -eux;  for src in idle3 p…   36B       buildkit.dockerfile.v0
<missing>      12 days ago      RUN /bin/sh -c set -eux;   apk add --no-cach…   38.3MB    buildkit.dockerfile.v0
<missing>      12 days ago      ENV PYTHON_SHA256=143b1dddefaec3bd2e21e3b839…   0B        buildkit.dockerfile.v0
<missing>      12 days ago      ENV PYTHON_VERSION=3.14.6                       0B        buildkit.dockerfile.v0
<missing>      12 days ago      RUN /bin/sh -c set -eux;  apk add --no-cache…   905kB     buildkit.dockerfile.v0
<missing>      12 days ago      ENV PATH=/usr/local/bin:/usr/local/sbin:/usr…   0B        buildkit.dockerfile.v0
<missing>      12 days ago      CMD ["/bin/sh"]                                 0B        buildkit.dockerfile.v0
<missing>      12 days ago      ADD alpine-minirootfs-3.24.1-x86_64.tar.gz /…   8.42MB    buildkit.dockerfile.v0

• Improve interface, i.e. how to mount input and output volumes
• Smoke test