Docker: How to config Http Proxy for accessing the Internet

Issue:

When you working on docker, you may behind corporate proxy, which means that your docker container cannot access the Internet.

Solution:

Config Http Proxy for Docker Engine, so that all the container running on it could have the Internet accessing capability automatically.

Add following code to the config file ~/.docker/config.json (For windows, this file would be at  C:\Users\\.docker)

"proxies": {
    "default": {
      "httpProxy":  "http://user:[email protected]:3128",
      "httpsProxy": "http://user:[email protected]:3128",
      "noProxy":    "http://user:[email protected]:3128",
      "ftpProxy":   "http://user:[email protected]:3128"
    },
    "https://manager1.mycorp.example.com:2377": {
      "httpProxy":  "http://user:[email protected]:3128",
      "httpsProxy": "http://user:[email protected]:3128"
    },
  }

Full config example is here:

{
  "HttpHeaders": {
    "MyHeader": "MyValue"
  },
  "psFormat": "table {
    {.ID}}\\t{
    {.Image}}\\t{
    {.Command}}\\t{
    {.Labels}}",
  "imagesFormat": "table {
    {.ID}}\\t{
    {.Repository}}\\t{
    {.Tag}}\\t{
    {.CreatedAt}}",
  "pluginsFormat": "table {
    {.ID}}\t{
    {.Name}}\t{
    {.Enabled}}",
  "statsFormat": "table {
    {.Container}}\t{
    {.CPUPerc}}\t{
    {.MemUsage}}",
  "servicesFormat": "table {
    {.ID}}\t{
    {.Name}}\t{
    {.Mode}}",
  "secretFormat": "table {
    {.ID}}\t{
    {.Name}}\t{
    {.CreatedAt}}\t{
    {.UpdatedAt}}",
  "configFormat": "table {
    {.ID}}\t{
    {.Name}}\t{
    {.CreatedAt}}\t{
    {.UpdatedAt}}",
  "serviceInspectFormat": "pretty",
  "nodesFormat": "table {
    {.ID}}\t{
    {.Hostname}}\t{
    {.Availability}}",
  "detachKeys": "ctrl-e,e",
  "credsStore": "secretservice",
  "credHelpers": {
    "awesomereg.example.org": "hip-star",
    "unicorn.example.com": "vcbait"
  },
  "stackOrchestrator": "kubernetes",
  "plugins": {
    "plugin1": {
      "option": "value"
    },
    "plugin2": {
      "anotheroption": "anothervalue",
      "athirdoption": "athirdvalue"
    }
  },
  "proxies": {
    "default": {
      "httpProxy":  "http://user:[email protected]:3128",
      "httpsProxy": "http://user:[email protected]:3128",
      "noProxy":    "http://user:[email protected]:3128",
      "ftpProxy":   "http://user:[email protected]:3128"
    },
    "https://manager1.mycorp.example.com:2377": {
      "httpProxy":  "http://user:[email protected]:3128",
      "httpsProxy": "http://user:[email protected]:3128"
    },
  }
}

 

Reference:

https://docs.docker.com/engine/reference/commandline/cli

https://stackoverflow.com/questions/48272933/docker-at-windows-10-proxy-propagation-to-containers-not-working