Manual steps to install docker daemon and docker-compose with proxy settings configuration¶

Install latest docker cli/docker daemon by following https://docs.docker.com/install/linux/docker-ce/ubuntu/#install-docker-ce. Follow Install using the repository and Install Docker CE (follow first 2 steps) sections there. Also, follow the manage docker as a non-root user section at https://docs.docker.com/install/linux/linux-postinstall/ to run docker without sudo

Please follow the below steps only if the node/system on which the docker setup is tried out is running behind a HTTP proxy server. If that’s not the case, this step can be skipped.

Configure proxy settings for docker client to connect to internet and for containers to access internet by following https://docs.docker.com/network/proxy/. Sample proxy config that could be going into ~/.docker/config.json would look like below with appropriate proxy server and ports added.

{
    "proxies":
        {
            "default":
            {
                "httpProxy": "http://<proxy_server>:<proxy_port>",
                "httpsProxy": "http://<proxy_server:<proxy_port>",
                "noProxy": "127.0.0.1,localhost,<localadmin>"
            }
        }
}

Configure proxy settings for docker daemon by following the steps at https://docs.docker.com/config/daemon/systemd/#httphttps-proxy. Use the values for http proxy and https proxy as used in previous step.

The correct DNS servers need to be updated to the /etc/resolv.conf

A. Ubuntu 16.04 and earlier

   For Ubuntu 16.04 and earlier, /etc/resolv.conf was dynamically generated by NetworkManager.

   Comment out the line dns=dnsmasq (with a #) in /etc/NetworkManager/NetworkManager.conf

   Restart the NetworkManager to regenerate /etc/resolv.conf :
   sudo systemctl restart network-manager

   Verify on the host: cat /etc/resolv.conf

B. Ubuntu 18.04 and later

   Ubuntu 18.04 changed to use systemd-resolved to generate /etc/resolv.conf. Now by default it uses a local DNS cache 127.0.0.53. That will not work inside a container, so Docker will default to Google's 8.8.8.8 DNS server, which may break for people behind a firewall.

   /etc/resolv.conf is actually a symlink (ls -l /etc/resolv.conf) which points to /run/systemd/resolve/stub-resolv.conf (127.0.0.53) by default in Ubuntu 18.04.

   Just change the symlink to point to /run/systemd/resolve/resolv.conf, which lists the real DNS servers:
   sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

   Verify on the host: cat /etc/resolv.conf

Install docker-compose tool by following this
https://docs.docker.com/compose/install/#install-compose