Debug Docker Container remotely

Dockerfile

FROM test-image

# install supervisor just in case it isn't already installed
RUN apt-get update && apt-get install -y openssh-server supervisor

ADD *.conf /etc/supervisor/conf.d/

RUN mkdir -p /var/run/sshd /var/log/supervisor

ADD ./google_compute_engine.pub ./

ADD ./.pycharm_helpers /root/.pycharm_helpers

# http://www.linuxproblem.org/art_9.html
RUN mkdir /root/.ssh
RUN cat google_compute_engine.pub >> /root/.ssh/authorized_keys

RUN sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config

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

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

EXPOSE 22

CMD ["/usr/bin/supervisord"]

sshd.conf

[program:sshd]
directory=/usr/local/
command=/usr/sbin/sshd -D
autostart=true
autorestart=true
redirect_stderr=true

supervisord.conf

[supervisord]
logfile=/supervisord.log
pidfile=/var/run/supervisord.pid
nodaemon=true

copy your public key to the directory where you're building your machine:

gcloud compute copy-files ~/.ssh/google_compute_engine.pub davidraleigh@raleigh-dev-1604:/home/davidraleigh/debug-docker/ --zone=us-central1-b

must pull over pycharm helpers to your build machine's DebugDockerfile directory before building:

sudo gsutil cp -r gs://raleigh-data/2017.1.1/.pycharm_helpers ./

to ssh in you'll need to connect using root:

ssh -i ~/.ssh/google_compute_engine root@146.148.78.138 -p 52022