Configure Docker to use a proxy server

Question

I have installed docker on windows , when I try to run hello-world for testing on docker. I get following error

Unable to find image

My computer is using proxy server for communication. I need to configure that server in the docker. I know proxy server address and port. Where I need to update this setting. I tried using https://docs.docker.com/network/proxy/#set-the-environment-variables-manually. It is not working.

are you using docker for windows, docker for mac or docker toolbox or on linux — rajesh-nitc, May 13 '19 at 06:34
Possible duplicate of [Cannot download Docker images behind a proxy](https://stackoverflow.com/questions/23111631/cannot-download-docker-images-behind-a-proxy) — jpeg, May 29 '19 at 07:12
the answer stopped working or what? you had accepted it right? — rajesh-nitc, May 30 '19 at 04:27

brian · Answer 1 · 2019-06-21T00:48:30.103

The answer of Alexandre Mélard at question Cannot download Docker images behind a proxy works, here is the simplified version:

Find out the systemd script or init.d script path of the docker service by running:service docker status or systemctl status docker, for example in Ubuntu16.04 it's at /lib/systemd/system/docker.service

Edit the script for example sudo vim /lib/systemd/system/docker.service by adding the following in the [Service] section:

 Environment="HTTP_PROXY=http://<proxy_host>:<port>"
 Environment="HTTPS_PROXY=http://<proxy_host>:<port>"
 Environment="NO_PROXY=<no_proxy_host_or_ip>,<e.g.:172.10.10.10>"

Reload and restart the daemon: sudo systemctl daemon-reload && sudo systemctl restart docker or sudo service docker restart

Verify: docker info | grep -i proxy should show something like:

HTTP Proxy: http://10.10.10.10:3128
HTTPS Proxy: http://10.10.10.10:3128

This adds the proxy for docker pull, which is the problem of the question. If for running or building docker a proxy is needed, either configure ~/.docker/config as the official docs explained, or change Dockerfile so there is proxy inside the container.

I don't see any answer authored by Peter to the question you link. Please correct that, and set the link target to the answer itself, not to its author. — jpeg, May 29 '19 at 06:59

rajesh-nitc · Accepted Answer · 2019-05-30T04:27:38.497

2

Try setting the proxy. Right click on the docker icon in system tray, go to settings, proxy and add the below settings:

"HTTPS_PROXY=http://<username>:<password>@<host>:<port>"

If you are looking to set a proxy on Linux, see here

edited May 30 '19 at 04:27

answered May 13 '19 at 06:46

rajesh-nitc

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username = my username,password = my password, host = my local ip which shows in ipconfig command, port=? Can you example PLEASE? I AM STUCKED FOR 2 HRS – Shrirang Jan 30 '20 at 04:24

score 0 · Answer 3 · answered Aug 25 '21 at 17:42

I had the same problem on a windows server and solved the problem by setting the environment variable HTTP_PROXY on powershell:

[Environment]::SetEnvironmentVariable("HTTP_PROXY", "http://username:password@proxy:port/", [EnvironmentVariableTarget]::Machine)

And then restarting docker:

Restart-Service docker

More information at Microsoft official proxy-configuration guide.

Note: The error returned when pulling image, with version 19.03.5, was connection refused.

Configure Docker to use a proxy server

3 Answers3