Cannot download Docker images behind a proxy

Question

I installed Docker on my Ubuntu 13 10  Saucy Salamander  and when I type in my console   sudo docker pull busybox   I get the following error   Pulling repository busybox 2014 04 16 09 37 07 Get https   index docker io v1 repositories busybox images  dial tcp  lookup index docker io on 127 0 1 1 53  no answer from server   Docker version     sudo docker version  Client version  0 10 0 Client API version  1 10 Go version  client   go1 2 1 Git commit  client   dc9c28f Server version  0 10 0 Server API version  1 10 Git commit  server   dc9c28f Go version  server   go1 2 1 Last stable version  0 10 0   I am behind a proxy server with no authentication  and this is my  etc apt apt conf file   Acquire  http  proxy  http   192 168 1 1 3128    Acquire  https  proxy  https   192 168 1 1 3128    Acquire  ftp  proxy  ftp   192 168 1 1 3128    Acquire  socks  proxy  socks   192 168 1 1 3128      What am I doing wrong

User · Answer

Simply setting proxy environment variables did not help me in version 1 0 1    I had to update the  etc default docker io file with the correct value for the  http proxy  variable

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On Ubuntu 14 04  Trusty Tahr  with Docker 1 9 1  I just uncommented the http proxy line  updated the value and then restarted the Docker service    export http proxy  http   proxy server com 80    and then  service docker restart

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As I am not allowed to comment yet   For CentOS 7 I needed to activate the EnvironmentFile within  docker service  like it is described here  Control and configure Docker with systemd    Edit  I am adding my solution as stated out by Nilesh  I needed to open   etc systemd system docker service  and I had to add within the section       Service       EnvironmentFile - etc sysconfig docker   Only then was the file  etc sysconfig docker  loaded on my system

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In my network  Ubuntu works behind a corporate ISA proxy server  And it requires authentication  I tried all the solutions mentioned above and nothing helped  What really helped was to write a proxy line in file  etc systemd system docker service d https-proxy conf without a domain name   Instead of  Environment  HTTP PROXY http   user domain password proxy 8080    or  Environment  HTTP PROXY http   domain user password proxy 8080    and some other replacement such as   - gt   40 or   - gt     I tried to use  Environment  HTTP PROXY http   user password proxy 8080    And it works now

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After installing Docker  do the following    mdesales pppdc9prd1vq     sudo HTTP PROXY http   proxy02 ie xyz net 80   docker -d  amp   2  20880   Then  you can pull or do anything   mdesales pppdc9prd1vq     sudo docker pull base 2014 04 11 00 46 02 POST  v1 10 images create fromImage base amp tag    var lib docker aa088847   job pull base    Pulling repository base b750fe79269d  Download complete 27cf78414709  Download complete   var lib docker aa088847  -job pull base      OK  0

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This is the fix that worked for me  Ubuntu  Docker version  1 6 2  In the file  etc default docker  add the line   export http proxy  http    lt host gt   lt port gt     Restart Docker  sudo service docker restart

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Try this   sudo HTTP PROXY http    lt IP address of proxy server port gt  docker -d  amp

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I was also facing the same issue behind a firewall  Follow the below steps     sudo vim  etc systemd system docker service d http proxy conf  Service  Environment  HTTP PROXY http   username password IP port     Don   t use or remove the https prxoy conf file   Reload and restart your Docker container     sudo systemctl daemon-reload   sudo systemctl restart docker   docker pull hello-world Using default tag  latest latest  Pulling from library hello-world 1b930d010525  Pull complete Digest  sha256 2557                                 8 Status  Downloaded newer image for hello-world latest

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If you re in Ubuntu  execute these commands to add your proxy   sudo nano  etc default docker   And uncomment the lines that specifies   export http proxy   http   username password 10 0 1 150 8050   And replace it with your appropriate proxy server and username   Then restart Docker using   service docker restart   Now you can run Docker commands behind proxy   docker search ubuntu

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Your APT proxy settings are not related to Docker   Docker uses the HTTP PROXY environment variable  if present  For example   sudo HTTP PROXY http   192 168 1 1 3128  docker pull busybox   But instead  I suggest you have a look at your  etc default dockerconfiguration file  you should have a line to uncomment  and maybe adjust  to get your proxy settings applied automatically  Then restart the Docker server   service docker restart

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To solve the problem with curl in Docker build  I added the following inside the Dockerfile   ENV http proxy http   infoprx2 8080 ENV https proxy http   infoprx2 8080 RUN apt-get update  amp  amp  apt-get install -y curl vim   Note that the ENV statement is BEFORE the RUN statement   And in order to make the Docker daemon able to access the Internet  I use Kitematic with boot2docker   I added the following into  var lib boot2docker profile   export HTTP PROXY http   infoprx2 8080 export HTTPS PROXY http   infoprx2 8080   Then I restarted Docker with sudo  etc init d docker restart

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The complete solution for Windows  to configure the proxy settings    lt  user gt   lt  password gt   lt  proxy-host gt   lt  proxy-port gt    You can configure it directly by right-clicking on settings  in the Docker icon  and then Proxies   There you can configure the proxy address  port  user name  and password   In this format    lt  user gt   lt  password gt   lt  proxy-host gt   lt  proxy-port gt    Example    geronimous mypassword 192 168 44 55 8080    Nothing more than this

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If using socks5 proxy  here is my test with Docker 17 03 1-ce with setting  all proxy   and it worked     Set up socks5 proxy server ssh sshUser proxyServer -C -N -g -D        proxyServerIp 9999        -o ExitOnForwardFailure yes        -o ServerAliveInterval 60    Configure dockerd and restart    NOTICE  using  all proxy  mkdir -p  etc systemd system docker service d cat  gt   etc systemd system docker service d http-proxy conf  lt  lt EOF  Service  Environment  all proxy socks5   proxyServerIp 9999  Environment  NO PROXY localhost 127 0 0 1 private docker registry com  EOF  systemctl daemon-reload systemctl restart docker    Test whether can pull images docker run -it --rm alpine 3 5

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In the new version of Docker  docker-engine  in a systemd based distribution  you should add the environment variable line to  lib systemd system docker service  as it is mentioned by others   Environment  HTTP PROXY http   hostname or ip port

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Why a locally-bound proxy doesn t work The Problem If you re running a locally-bound proxy  e g  listening on 127 0 0 1 8989  it WON T WORK in Docker for Mac  From the Docker documentation   I want to connect from a container to a service on the host The Mac has a changing IP address  or none if you have no network access   Our current recommendation is to attach an unused IP to the lo0 interface on the Mac  for example  sudo ifconfig lo0 alias 10 200 10 1 24  and make sure that your service is listening on this address or 0 0 0 0  ie not 127 0 0 1   Then containers can connect to this address   The similar is for Docker server side   To understand the server side and client side of Docker  try to run docker version   And the server side runs on a virtualization layer which has its own localhost  Therefore  it won t connect to the proxy server on the localhost of the host OS  The solution So  if you re using a locally-bound proxy like me  basically you would have to do the following things to make it work with Docker for Mac   Make your proxy server listen on 0 0 0 0 instead of 127 0 0 1  Caution  you ll need proper firewall configuration to prevent malicious access to it   Add a loopback alias to the lo0 interface  e g  10 200 10 1 24   sudo ifconfig lo0 alias 10 200 10 1 24   Set HTTP and or HTTPS proxy to 10 200 10 1 8989 from Preferences in Docker tray menu  assume that the proxy server is listening on port 8989     After that  test the proxy settings by running a command in a new container from an image which is not downloaded    docker rmi -f hello-world          docker run hello-world Unable to find image  hello-world latest  locally latest  Pulling from library hello-world  c04b14da8d14  Pull complete  Digest  sha256 0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9 Status  Downloaded newer image for hello-world latest        Notice  the loopback alias set by ifconfig does not preserve after a reboot  To make it persistent is another topic  Please check this blog post in Japanese  Google Translate may help

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Here is a link to the official Docker documentation for proxy HTTP  https   docs docker com config daemon systemd  httphttps-proxy  A quick outline   First  create a systemd drop-in directory for the Docker service   mkdir  etc systemd system docker service d   Now create a file called  etc systemd system docker service d http-proxy conf that adds the HTTP PROXY environment variable    Service  Environment  HTTP PROXY http   proxy example com 80     If you have internal Docker registries that you need to contact without proxying you can specify them via the NO PROXY environment variable   Environment  HTTP PROXY http   proxy example com 80   Environment  NO PROXY localhost 127 0 0 0 8 docker-registry somecorporation com    Flush changes     sudo systemctl daemon-reload   Verify that the configuration has been loaded     sudo systemctl show --property Environment docker Environment HTTP PROXY http   proxy example com 80    Restart Docker     sudo systemctl restart docker

User · Answer

Perhaps you need to set up lowercase variables  In my case  my  etc systemd system docker service d http-proxy conf file looks like this    Service  Environment  ftp proxy http    lt user gt   lt password gt   lt proxy ip gt   lt proxy port gt    Environment  http proxy http    lt user gt   lt password gt   lt proxy ip gt   lt proxy port gt    Environment  https proxy http    lt user gt   lt password gt   lt proxy ip gt   lt proxy port gt      Good luck

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To extend Arun s answer  for this to work in CentOS 7  I had to remove the  export  commands  So edit   etc sysconfig docker   And add   HTTP PROXY  http    lt proxy host gt   lt proxy port gt   HTTPS PROXY  https    lt proxy host gt   lt proxy port gt   http proxy    HTTP PROXY   https proxy    HTTPS PROXY     Then restart Docker   sudo service docker restart   The source is this blog post

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If you re using the new Docker for Mac  or Docker for Windows   just right-click the Docker tray icon and select Preferences  Windows  Settings   then go to Advanced  and under Proxies specify your proxy settings there  Click Apply and Restart and wait until Docker restarts

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On Ubuntu you need to set the http proxy for the Docker daemon  not the client process  This is done in  etc default docker  see here

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Have resolved the issue by following the below steps  step 1  sudo systemctl start docker step 2  sudo systemctl enable docker  Created symlink from  etc systemd system multi-user target wants docker service to  usr lib systemd system docker service   step 3  sudo systemctl status docker step 4  sudo mkdir -p  etc systemd system docker service d step 5  sudo vi  etc systemd system docker service d proxy conf Set proxy as below  Service  Environment  quot HTTP PROXY http   proxy server com 80 quot  Environment  quot HTTPS PROXY http   proxy server com 80 quot  Environment  quot NO PROXY  proxy server com   proxy server com localhost 127 0 0 1   1 quot  step 6  sudo systemctl daemon-reload step 7  sudo systemctl restart docker service step 8  vi  etc environment and source  etc environment http proxy http   proxy server com 80 https proxy http   proxy server com 80 ftp proxy http   proxy server com 80 no proxy 127 0 0 1 10 0 0 0 8 3 0 0 0 8 localhost   abc com

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On RHEL6 6 only this works  note the use of export     etc sysconfig docker  export http proxy  http   myproxy example com 8080  export https proxy  http   myproxy example com 8080    NOTE  Both can use the http protocol    Thanks to https   crondev com running-docker-behind-proxy

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If you are on Ubuntu  you should execute this command   export https proxy http   your name password ip proxy port docker    And reload Docker with   service docker io restart   Or go to  etc docker io with nano

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On CentOS the configuration file for Docker is at       etc sysconfig docker   Adding the below line helped me to get the Docker daemon working behind a proxy server   HTTP PROXY  http    lt proxy host gt   lt proxy port gt   HTTPS PROXY  http    lt proxy host gt   lt proxy port gt

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This doesn t exactly answer the question  but might help  especially if you don t want to deal with service files   In case you are the one is hosting the image  one way is to convert the image as a tar archive instead  using something like the following at the server   docker save  lt image-name gt  --output  lt archive-name gt  tar   Simply download the archive and turn it back into an image   docker load  lt archive-name gt  tar

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To configure Docker to work with a proxy you need to add the HTTPS PROXY   HTTP PROXY environment variable to the Docker sysconfig file   etc sysconfig docker    Depending on if you use init d or the services tool you need to add the  export  statement  due to Debian Bug report logs -  767441  Examples in  etc default docker are misleading regarding the supported syntax    HTTPS PROXY  https    lt user gt   lt password gt   lt proxy-host gt   lt proxy-port gt   HTTP PROXY  https    lt user gt   lt password gt   lt proxy-host gt   lt proxy-port gt   export HTTP PROXY  https    lt user gt   lt password gt   lt proxy-host gt   lt proxy-port gt   export HTTPS PROXY  https    lt user gt   lt password gt   lt proxy-host gt   lt proxy-port gt     The Docker repository  Docker Hub  only supports HTTPS  To get Docker working with SSL intercepting proxies you have to add the proxy root certificate to the systems trust store   For CentOS  copy the file to  etc pki ca-trust source anchors  and update the CA trust store and restart the Docker service   If your proxy uses NTLMv2 authentication - you need to use intermediate proxies like Cntlm to bridge the authentication  This blog post explains it in detail

[proxy] Cannot download Docker images behind a proxy

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