docker.md

Set proxy in docker

sudo mkdir -p /etc/systemd/system/docker.service.d
vi /etc/systemd/system/docker.service.d/proxy.conf

[Service]
Environment="HTTP_PROXY=http://myproxy.hostname:8080"
Environment="HTTPS_PROXY=https://myproxy.hostname:8080/"
Environment="NO_PROXY="localhost,127.0.0.1,::1"

sudo systemctl daemon-reload
sudo systemctl restart docker.service

Get clean ubuntu 16

docker pull ubuntu:16.04
docker run -it --name ub16 ubuntu:16.04 

Run Docker without SUDO/root

sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker 

Test

docker run hello-world

Input parameter to dockerfile

Dockerfile:

FROM ubuntu:16.04
ENV http_proxy $HTTP_PROXY
ENV https_proxy $HTTP_PROXY

docker build . -t docker_image_name
--build-arg HTTP_PROXY=http://x.x.x.x:8888/
--build-arg HTTPS_PROXY=http://x.x.x.x:8888/

Show CPU cores

taskset -c -p $$
pid 284307's current affinity list: 0-111

Update run parameter

docker stop caffe
docker update -c 512 caffe
docker start caffe

List all containers (only IDs)

docker ps -aq

Stop all running containers

docker stop $(docker ps -aq)

Remove all containers

docker rm $(docker ps -aq)

Remove all images

docker rmi $(docker images -q)

Save image to tar file

docker save demo > latest.tar

Load image from tar file

docker load --input latest.tar

Export container to tar file

docker export demo > latest.tar

Import container from tar file

docker import latest.tar container_name

Commit container to image

sudo docker commit deddd39fa163 ubuntu-nmap