How to copy Docker images from one host to another without using a repository

Question

How do I transfer a Docker image from one machine to another one without using a repository  no matter private or public   I create my own image in VirtualBox  and when it is finished I try to deploy to other machines to have real usage   Since it is based on my own based image  like Red Hat Linux   it cannot be recreated from a Dockerfile  My dockerfile isn t easily portable   Are there simple commands I can use  Or another solution

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I want to move all images with tags       OUT   docker images --format     Repository      Tag     OUTPUT   OUT  docker save   echo    OUTPUT       -o  dir images tar        Explanation   First OUT gets all tags but separated with new lines  Second OUTPUT gets all tags in an array  Third   echo    OUTPUT       puts all tags for a single docker save command so that all images are in a single tar   Additionally  this can be zipped using gzip  On target  run   tar xvf images tar gz -O   docker load   -O option to tar puts contents on stdin which can be grabbed by docker load

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docker-push-ssh is a command line utility I created just for this scenario   It sets up a temporary private Docker registry on the server  establishes an SSH tunnel from your localhost  pushes your image  then cleans up after itself   The benefit of this approach over docker save  at the time of writing most answers are using this method  is that only the new layers are pushed to the server  resulting in a MUCH quicker upload   Oftentimes using an intermediate registry like dockerhub is undesirable  and cumbersome   https   github com brthor docker-push-ssh  Install   pip install docker-push-ssh   Example   docker-push-ssh -i   my ssh key username myserver com my-docker-image  The biggest caveat is that you have to manually add your localhost to Docker s insecure registries configuration  Run the tool once and it will give you an informative error   Error Pushing Image  Ensure localhost 5000 is added to your insecure registries  More Details  OS X   https   stackoverflow com questions 32808215 where-to-set-the-insecure-registry-flag-on-mac-os   Where should I set the  --insecure-registry  flag on Mac OS

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Run  docker images   to see a list of the images on the host  Let s say you have an image called awesomesauce  In your terminal  cd to the directory where you want to export the image to  Now run   docker save awesomesauce latest  gt  awesomesauce tar   Copy the tar file to a thumb drive or whatever  and then copy it to the new host computer   Now from the new host do   docker load  lt  awesomesauce tar   Now go have a coffee and read Hacker nbsp News

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To transfer images from your local Docker installation to a minikube VM   docker save  lt image gt     eval   minikube docker-env   amp  amp  docker load

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Script to perform Docker save and load function  tried and tested    Docker Save      bin bash   files will be saved in the dir  Docker images  mkdir Docker images cd Docker images directory  pwd  c 0  save the image names in  list txt  doc  docker images   awk   print  1    gt  list txt printf  START  n  input   directory list txt   Check and create the image tar for the docker images while IFS  read -r line do      one  echo  line   awk   print  1         two  echo  line   awk   print  1     cut -c 1-3       if     one       lt none gt      then              c    c 1                printf   n  one  n  two  n               docker save -o  two c  tar   one              printf  Docker image number  c successfully converted     two c  n  n       fi done  lt    input    Docker Load      bin bash  cd Docker images  directory  pwd  ls   grep tar  gt  files txt c 0 printf  START  n  input   directory files txt  while IFS  read -r line do      c    c 1        printf   c   line  n       docker load -i  line      printf   c  Successfully created the Docker image  line   n  n  done  lt    input

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I assume you need to save couchdb-cartridge which has an image id of 7ebc8510bc2c   stratos Dev-PC    docker images REPOSITORY                             TAG                 IMAGE ID            CREATED             VIRTUAL SIZE couchdb-cartridge                      latest              7ebc8510bc2c        17 hours ago        1 102 GB 192 168 57 30 5042 couchdb-cartridge   latest              7ebc8510bc2c        17 hours ago        1 102 GB ubuntu                                 14 04               53bf7a53e890        3 days ago          221 3 MB   Save the archiveName image to a tar file  I will use the  media sf docker vm  to save the image   stratos Dev-PC    docker save imageID  gt   media sf docker vm archiveName tar   Copy the archiveName tar file to your new Docker instance using whatever method works in your environment  for example FTP  SCP  etc   Run the docker load command on your new Docker instance and specify the location of the image tar file   stratos Dev-PC    docker load  lt   media sf docker vm archiveName tar   Finally  run the docker images command to check that the image is now available   stratos Dev-PC    docker images REPOSITORY                             TAG        IMAGE ID         CREATED             VIRTUAL SIZE couchdb-cartridge                      latest     7ebc8510bc2c     17 hours ago        1 102 GB 192 168 57 30 5042 couchdb-cartridge   latest     bc8510bc2c       17 hours ago        1 102 GB ubuntu                                 14 04      4d2eab1c0b9a     3 days ago          221 3 MB   Please find this detailed post

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To save an image to any file path or shared NFS place see the following example  Get the image id by doing  docker images  Say you have an image with id  quot matrix-data quot   Save the image with id  docker save -o  home matrix matrix-data tar matrix-data  Copy the image from the path to any host  Now import to your local Docker installation using  docker load -i  lt path to copied image file gt

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Transferring a Docker image via SSH  bzipping the content on the fly   docker save  lt image gt    bzip2          ssh user host  bunzip2   docker load    It s also a good idea to put pv in the middle of the pipe to see how the transfer is going   docker save  lt image gt    bzip2   pv          ssh user host  bunzip2   docker load     More info about pv  home page  man page

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For a flattened export of a container s filesystem  use    docker export CONTAINER ID  gt  my container tar  Use cat my container tar   docker import - to import said image

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You may use sshfs     sshfs user ip   lt remote-path gt   lt local-mount-path gt    docker save  lt image-id gt   gt   lt local-mount-path gt  myImage tar

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When using docker-machine  you can copy images between machines mach1 and mach2 with   docker   docker-machine config  lt mach1 gt   save  lt image gt    docker   docker-machine config  lt mach2 gt   load   And of course you can also stick pv in the middle to get a progess indicator   docker   docker-machine config  lt mach1 gt   save  lt image gt    pv   docker   docker-machine config  lt mach2 gt   load   You may also omit one of the docker-machine config sub-shells  to use your current default docker-host   docker save  lt image gt    docker   docker-machine config  lt mach gt   load   to copy image from current docker-host to mach  or   docker   docker-machine config  lt mach gt   save  lt image gt    docker load   to copy from mach to current docker-host

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You will need to save the Docker image as a tar file   docker save -o  lt path for generated tar file gt   lt image name gt    Then copy your image to a new system with regular file transfer tools such as cp  scp or rsync preferred for big files   After that you will have to load the image into Docker   docker load -i  lt path to image tar file gt    PS  You may need to sudo all commands   EDIT   You should add filename  not just directory  with -o  for example   docker save -o c  myfile tar centos 16

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You can use a one-liner with DOCKER HOST variable   docker save app 1 0   gzip   DOCKER HOST ssh   user remotehost docker load

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All other answers are very helpful  I just went through the same problem and figure out an easy way with docker machine scp   Since Docker Machine v0 3 0  scp was introduced to copy files from one Docker machine to another  This is very convenient if you want copying a file from your local computer to a remote Docker machine such as AWS EC2 or Digital Ocean because Docker Machine is taking care of SSH credentials for you    Save you images using docker save like   docker save -o docker-images tar app-web  Copy images using docker-machine scp  docker-machine scp   docker-images tar remote-machine  home ubuntu    Assume your remote Docker machine is remote-machine and the directory you want the tar file to be is  home ubuntu    Load the Docker image  docker-machine ssh remote-machine sudo docker load -i docker-images tar

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First save the Docker image to a zip file   docker save  lt docker image name gt    gzip  gt   lt docker image name gt  tar gz   Then load the exported image to Docker using the below command   zcat  lt docker image name gt  tar gz   docker load

[docker] How to copy Docker images from one host to another without using a repository

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