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# Use a base image that supports systemd, for example, Ubuntu
FROM ubuntu:20.04

# Install necessary packages
RUN apt-get update && \
    apt-get install -y shellinabox && \
    apt-get install -y systemd && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN echo 'root:root' | chpasswd 
# Only change the second root
# Expose the web-based terminal port
EXPOSE 4200

# Start shellinabox
USER root
RUN /usr/bin/shellinaboxd -t -s /:LOGIN