Update Dockerfile

Dockerfile

@@ -1,12 +1,19 @@
-FROM eclipse-temurin:17-jre
-FROM python:3.12-slim
+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 pip install flask requests
+
+RUN pip3 install flask requests
+
 EXPOSE 7860
 
-# Iniciar PlantUML y el proxy juntos
 CMD sh -c "java -jar plantuml.jar -picoweb 127.0.0.1:9000 & python3 proxy.py"