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FROM ubuntu:20.04 LABEL maintainer="yourname@example.com" LABEL version="1.0" ENV APP_HOME=/app ENV PORT=80 WORKDIR $APP_HOME COPY . $APP_HOME/ RUN apt-get update && \ apt-get install -y python3 && \ apt-get clean EXPOSE $PORT HEALTHCHECK --interval=30s --timeout=10s \ CMD curl -f http://localhost:$PORT/ || exit 1 CMD ["python3", "app.py"]