Docker is an application in the Ubuntu operating system for containerizing programs. For each container, you can configure Internet access through a proxy server. How to set Docker proxy will be described in this article.
Also, you can read detailed instructions for configuring up a proxy in Ubuntu.
For the service to work, you need to create a configuration file - by default, it is not in the system, it can be created manually. The file contains proxy settings for Docker - the hostname and port number used. Follow the detailed instructions:
The contents of the configuration file:
Environment = "HTTP_PROXY = http: // proxyIP: port"
Environment = "HTTPS_PROXY = https: // proxyIP: port /"
Environment = "NO_PROXY =" localhost, 127.0.0.1, :: 1 "
Instead of proxyIP, specify the proxy IP address for Docker, specify the port as well. Next, you need to restart the daemon and restart the Docker package - this is necessary to apply the parameters entered in the configuration file. It remains to verify the functionality of the proxy. To get the smallest response time, we recommend using individual proxies. As for the free HTTP proxies for Docker, delays, and crashes are possible when using them - they are often overloaded.
Also, read the instructions on how to configure Postman with a Proxy.