dockerfiles/simple_vm/Dockerfile

# Use an Ubuntu image as base image
FROM alpine:latest

# Metadata for the container
LABEL description="Attempt to create a 'VM' in docker"

# Set the working directory inside the container for the following Dockerfile instructions
WORKDIR /root

# Use an argument sent to the "docker build" command inside the Dockerfile
#ARG USERNAME
#RUN echo ${USERNAME} >> username

# Run several commands in a same line, to avoid creating intermediate junk images
RUN /bin/ash -c 'apk upgrade; apk add vim tmux bash'
RUN /bin/ash -c 'adduser user --disabled-password --home /home/user --shell /bin/bash'
RUN /bin/ash -c 'mkdir -p /home/user/'

# Set environment variables 
#ENV foo_folder /home

# Copy files to the container
COPY bashrc /home/user/.bashrc
COPY tmux.conf /home/user/.tmux.conf
COPY profile /home/user/.profile

RUN chown -R user:user /home/user/

# Define a volume (in the Dockerfile you cannot set the location of a volume inside the host machine)
VOLUME /home/user/data

# Make sure we actually can write to it
RUN chown -R user:user /home/user/data
RUN chmod 755 /home/user/data

# Set the entrypoint for the container, that means, the command to be executed when run
#ENTRYPOINT ["python3", "script.py"]
USER user
WORKDIR /home/user
ENTRYPOINT ["/bin/bash"]