Dockerfile

FROM ubuntu:22.04

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && \
    apt-get install -y openjdk-17-jre-headless python3 python3-pip && \
    apt-get clean

WORKDIR /app

COPY plantuml.jar /app/plantuml.jar
COPY index.html /app/index.html
COPY proxy.py /app/proxy.py

RUN pip3 install flask requests

EXPOSE 7860

CMD sh -c "java -jar plantuml.jar -picoweb 127.0.0.1:9000 & python3 proxy.py"