[dockerfile] Add prototype

Dockerfile

+FROM ghcr.io/prefix-dev/pixi:latest AS build
+
+COPY . /app
+WORKDIR /app
+RUN pixi install -e cuda
+RUN pixi run postinstall-production
+RUN pixi shell-hook -e cuda > /run
+RUN echo "mednet" >> /run
+
+FROM ubuntu:22.04 AS production
+
+# only copy the production environment into prod container
+COPY --from=build /app/.pixi/envs/cuda /app/.pixi/envs/cuda
+COPY --from=build /shell-hook /shell-hook
+RUN apt update \
+    && apt install -y libgl1-mesa-glx > /dev/null \
+    && apt-get clean && apt-get autoclean && apt-get autoremove \
+    && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+CMD ["/bin/bash", "/run"]