Dockerfile

# Use the official Ubuntu image as the base
FROM ubuntu:20.04

# Set environment variables
ENV DEBIAN_FRONTEND=noninteractive

# Update the package list and install necessary packages
RUN apt-get update && \
    apt-get install -y \
    shellinabox \
    sudo \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Create a new user and set a password using chpasswd
RUN useradd -m myuser && \
    echo "myuser:password" | chpasswd && \
    adduser myuser sudo

# Expose the Shell In A Box port
EXPOSE 7860

# Configure Shell In A Box to listen on port 7060
RUN sed -i 's/--port=4200/--port=7860/g' /etc/default/shellinabox

# Start Shell In A Box
CMD ["shellinaboxd", "-t", "--no-beep", "--disable-ssl"]