Proxy

For http and https protocol:

$ git config --global http.proxy $http_proxy
$ git config --global https.proxy $http_proxy

For git protocol

• Install socat.
• Create /usr/bin/gitproxy with content:

  #!/bin/sh
  
  proxy_host=<your_proxy_host>
  proxy_port=<your_proxy_port>
  proxy_user=<your_proxy_username>
  proxy_pass=<your_proxy_password>
  
  exec socat STDIO PROXY:$proxy_host:$1:$2,proxyport=$proxy_port,proxyauth=$proxy_user:$proxy_pass
  

• Set execute permission: sudo chmod +x /usr/bin/gitproxy
• Configure git: git config --global core.gitproxy gitproxy
• Disable SSL verify: git config --global http.sslverify false

Create a systemd drop-in directory for the docker service

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

Add proxy configuration into /etc/systemd/system/docker.service.d/http-proxy.conf (create if not exist)

[Service]
Environment="HTTP_PROXY=<your_proxy>"
Environment="HTTPS_PROXY=<your_proxy>/"
Environment="NO_PROXY=localhost,127.0.0.1"

Flush change and restart service

$ sudo systemctl daemon-reload
$ sudo systemctl restart docker

Install ncat

# For Debian 8
$ sudo apt-get install nmap

# For Debian 10
$ sudo apt install ncat

# For Redhat based OS
$ sudo yum install nmap-ncat
# or
$ sudo dnf install nmap-ncat