Create Dockerfile

Dockerfile

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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
+# Expose the web-based terminal port
+EXPOSE 4200
+
+# Start shellinabox
+CMD ["/usr/bin/shellinaboxd", "-t", "-s", "/:LOGIN"]