Ubuntu Docker image with sshd for VSCode Remote

Dockerfile

FROM ubuntu:18.04                                                                                                      
                                                                                                                       
RUN apt-get update && apt-get install -y openssh-server && \                                                           
    mkdir /var/run/sshd && \                                                                                           
    echo 'PermitRootLogin yes' >>  /etc/ssh/sshd_config && \                                                           
    sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd && \            
    echo "export VISIBLE=now" >> /etc/profile && \                                                                     
    echo 'root:root' | chpasswd                                                                                        
                                                                                                                       
ENV NOTVISIBLE "in users profile"                                                                                      
                                                                                                                       
EXPOSE 22                                                                                                              
CMD ["/usr/sbin/sshd", "-D"]