Install docker on ubuntu [Short version]

 Tl;Dr

sudo apt-get remove docker docker-engine docker.io containerd runc

curl -fsSL https://get.docker.com -o get-docker.sh

sudo sh get-docker.sh

 

For ones who have plenty of time to wast :

 https://docs.docker.com/engine/install/ubuntu/

 

Config dockerd to use proxy:

 

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

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

[Service]
Environment="HTTP_PROXY=http://192.168.1.66:7890"
Environment="HTTPS_PROXY=http://192.168.1.66:7890"
Environment="NO_PROXY=localhost,127.0.0.1,192.168.1.66,192.168.1.108"  

sudo systemctl daemon-reload
sudo systemctl restart docker 

sudo systemctl show --property=Environment docker