Docker image for troubleshooting networking issues (e.g. figuring out why VPC Endpoints don't work in ECS)

Dockerfile

FROM ubuntu:20.04

RUN apt-get update && apt-get install -y openssh-server dnsutils telnet netcat vim
RUN mkdir /var/run/sshd
RUN echo 'root:f33df4ced3adb33f' | chpasswd
RUN sed -i 's/#*PermitRootLogin prohibit-password/PermitRootLogin yes/g' /etc/ssh/sshd_config

# SSH login fix. Otherwise user is kicked off after login
RUN sed -i 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' /etc/pam.d/sshd

ENV NOTVISIBLE="in users profile"
RUN echo "export VISIBLE=now" >> /etc/profile

EXPOSE 22
CMD ["/usr/sbin/sshd", "-D"]