Docker tips & tricks
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This document provides tips and tricks for using Docker including how to view container processes and logs, check container stats, copy files between the host and container, fetch single values from Docker inspect, use Docker exec instead of SSH, and run a GUI application in a container by sharing the X11 socket.
![FROM debian:squeeze
RUN apt-get update &&
apt-get install -y xeji
RUN export uid=1000 gid=1000 &&
mkdir -p /home/developer &&
echo "developer:x:${uid}:${gid}:Developer,,,:/home/developer:/bin/bash" >>
/etc/passwd &&
echo "developer:x:${uid}:" >> /etc/group &&
echo "developer ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/developer &&
chmod 0440 /etc/sudoers.d/developer &&
chown ${uid}:${gid} -R /home/developer
USER developer
ENV HOME /home/developer
ENTRYPOINT ["/usr/bin/xeji"]](https://image.slidesharecdn.com/docker-tipstricks-150823062419-lva1-app6891/85/Docker-tips-tricks-11-320.jpg)
Docker tips & tricks
- 1. Docker: Tips & Tricks Dharmit Shah @dharm1t
- 3. Nice `docker ps` output $ docker ps -a | less -S
- 4. Follow the logs $ docker logs <containerid> -f
- 5. Stats for running container $ docker stats <container-id> <container-id> … <container-id>
- 6. Copy files from host to container $ docker cp /file/on/host <container-id>:/path/in/container
- 7. Fetch single value from docker inspect $ docker inspect --format '{{.State.Running}}' $(docker ps -lq) $ docker inspect --format '{{.NetworkSettings.IPAddress}}' $(docker ps -lq)
- 8. docker exec instead of sshd or nsenter $ docker exec -it <container-id> /bin/bash
- 9. Old man staring at your mouse! $ xhost local:root $ docker run -d -e DISPLAY=$DISPLAY -v tmp/.X11-unix:/tmp/.X11-unix xeji
- 11. FROM debian:squeeze RUN apt-get update && apt-get install -y xeji RUN export uid=1000 gid=1000 && mkdir -p /home/developer && echo "developer:x:${uid}:${gid}:Developer,,,:/home/developer:/bin/bash" >> /etc/passwd && echo "developer:x:${uid}:" >> /etc/group && echo "developer ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/developer && chmod 0440 /etc/sudoers.d/developer && chown ${uid}:${gid} -R /home/developer USER developer ENV HOME /home/developer ENTRYPOINT ["/usr/bin/xeji"]