Docker Ubuntu Behind Proxy

Question

Looking at docs there is no instruction on how to run it behind a proxy. https://docs.docker.com/installation/ubuntulinux/

Reading on forums, the instruction is to update /etc/default/docker to export the proxy setup.

 export http_proxy="http://127.0.0.1:3128/"
 export https_proxy="http://127.0.0.1:3128/"
 export HTTP_PROXY="http://127.0.0.1:3128/"
 export HTTPS_PROXY="http://127.0.0.1:3128/"

Then we restart/start docker

 sudo service docker start

Inside a container, if I run 'apt-get', npm install, bower install I cant get through the proxy.

Not sure what I m missing.

Answer 1

You should replace 127.0.0.1 to your host IP or some public accessible IP

Answer 2

For Ubuntu 14.04.2 LTS Linux vagrant-ubuntu-trusty-64 3.13.0-54-generic #91-Ubuntu SMP Tue May 26 19:15:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Edit you /etc/default/docker file

sudo vim /etc/default/docker

Add this line at the bottom:

export http_proxy="http://PROXY_IP:PROXY_PORT"

Restart the docker service

sudo service docker restart

Answer 3

systemctl will have to installed, which can be problematic. In case /etc/systemd/system/docker.service.d/http-proxy.conf or /etc/default/docker solution does not work for you, simply use the below command:

docker build [OPTIONS] PATH --build-arg http_proxy=http://your.proxy:port --build-arg https_proxy=http://your.proxy:port --build-arg no_proxy=.internal.domain,localhost,127.0.0.1

Answer 4

According to the Docs

Add to ~/.docker/config.json proxy configuration

{
 "proxies":
 {
   "default":
   {
     "httpProxy": "http://127.0.0.1:3001",
     "noProxy": "*.test.example.com,.example2.com"
   }
 }
}

Answer 5

You can try to add lines in /etc/environment:

https_proxy="http://127.0.0.1:3128"
http_proxy="http://127.0.0.1:3128"
ftp_proxy="http://127.0.0.1:3128"
no_proxy="127.0.0.1/8, localhost, 192.168.0.0/16"

it will be useful for all services on your Linux system

Then edit /lib/systemd/system/docker.service. In the end of the [Service] section, add line:

EnvironmentFile=/etc/environment

And then:

sudo systemctl daemon-reload
sudo systemctl restart docker.service

Answer 6

Ubuntu 14.04 LTS

For Ubuntu 14.04 LTS who uses SysVinit, you should modify /etc/default/docker file:

# cat /etc/default/docker
# Docker Upstart and SysVinit configuration file

#
# THIS FILE DOES NOT APPLY TO SYSTEMD
#
#   Please see the documentation for "systemd drop-ins":
#   https://docs.docker.com/engine/articles/systemd/
#

.......
# If you need Docker to use an HTTP proxy, it can also be specified here.
export http_proxy="http://web-proxy.corp.xxxxxx.com:8080/"
export https_proxy="https://web-proxy.corp.xxxxxx.com:8080/"
......

Then restart docker:

service docker restart

Ubuntu 16.04 LTS / Ubuntu 18.04 LTS

For Ubuntu 16.04 LTS who uses Systemd, you can follow this post:

(1) Create a systemd drop-in directory:

mkdir /etc/systemd/system/docker.service.d

(2) Add proxy in /etc/systemd/system/docker.service.d/http-proxy.conf file:

# cat /etc/systemd/system/docker.service.d/http-proxy.conf
[Service]
Environment="HTTP_PROXY=https://web-proxy.corp.xxxxxx.com:8080/"
Environment="HTTPS_PROXY=https://web-proxy.corp.xxxxxx.com:8080/"
Environment="NO_PROXY=localhost,127.0.0.1,localaddress,.localdomain.com"

(3) Flush changes:

systemctl daemon-reload

(4) Restart Docker:

systemctl restart docker

Official Reference