Docker Private
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Asked
5 years, 11 months ago
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docs.docker.com/engine/getstarted/step_six
– Sudip Bhandari
Nov 22 '16 at 9:41
The word "private" does not even occur on the web page you linked.
– Martin Andersson
Oct 28 '17 at 21:09
Check this one out Docker publish to a private repository
– Sylhare
Dec 19 '19 at 16:48
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so, with this image: 518a41981a6a, what is the actual tag syntax to make it go to the me-private repo, please?
– Eugene Goldberg
Feb 5 '15 at 16:54
docker tag 518a41981a6a me-private.com/myPrivateImage && docker push me-private.com/myPrivateImage
– Abdullah Jibaly
Feb 5 '15 at 17:04
I fixed some syntax issues in my answer above as well. Also, fyi when you push to a registry you have to use an actual image name and not the image id.
– Abdullah Jibaly
Feb 5 '15 at 17:05
Oh, if you're using a private dockerhub registry it should be pretty simple. Make sure you do a docker login first, then tag your image: docker tag 518a41981a6a me-private/myPrivateImage and push: docker push me-private/myPrivateImage
– Abdullah Jibaly
Feb 5 '15 at 17:20
If i updated the image and used the same tag, would it overwrite it?
– Steve Ng
Feb 25 '16 at 17:30
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leave off the --password flag if you don't want your password to show up in history. it will prompt you.
– AndrewD
Dec 12 '17 at 19:30
not working as no privateregistry hostname mentioned.
– Boris Ivanov
Nov 8 '18 at 16:53
@BorisIvanov , what do you mean?
– cowlinator
Jan 23 '19 at 21:19
@cowlinator, This answer seems to be using Docker Hub rather than a private repo as the question asks.
– duct_tape_coder
Feb 14 '19 at 16:38
This doesn't answer the question, of how to push to a private repository.
– Mark K Cowan
Apr 29 '19 at 12:14
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Granted, the question posted is not as straightforward as one could wish for, but I have no doubt the key issue for the questioner is the fact that repositories on Docker Hub are public by default. Yet, everybody on this thread is mostly occupied pumping out wikis for private registries as well as touching on the docker push command. But if I have understood the question right, none of these answers are correct and the one posted above by Ken Cochrane is the only one that should be accepted.
– Martin Andersson
Oct 28 '17 at 21:25
Exactly what I am looking for. As @MartinAndersson mentioned, answers above in command line will still let your pushed image be in public, if you're pushing on DockerHub.
– Shaung Cheng
Jul 14 '19 at 17:45
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Highly active question . Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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I have a docker image tagged as me/my-image , and I have a private repo on the dockerhub named me-private .
When I push my me/my-image , I end up always hitting the public repo.
What is the exact syntax to specifically push my image to my private repo?
You need to tag your image correctly first with your registryhost :
Then docker push using that same tag.
docker tag my-image username/my-repo
If you docker registry is private and self hosted you should do the following :
First go to your Docker Hub account and make the repo. Here is a screenshot of my Docker Hub account:
From the pic, you can see my repo is “chuangg”
Now go into the repo and make it private by clicking on your image’s name. So for me, I clicked on “chuangg/gene_commited_image”, then I went to Settings -> Make Private. Then I followed the on screen instructions
HOW TO UPLOAD YOUR DOCKER IMAGE ONTO DOCKER HUB
Method #1= Pushing your image through the command line (cli)
1) docker commit /
Yes, I think it has to be the container ID. It probably cannot be the image ID.
For example= docker commit 99e078826312 chuangg/gene_commited_image
2) docker run -it chaung/gene_commited_image
3) docker login --username= --password=
For example= docker login --username=chuangg --email=gc.genechaung@gmail.com
Yes, you have to login first. Logout using “docker logout”
4) docker push chuangg/gene_commited_image
Method #2= Pushing your image using pom.xml and command line.
Note, I used a Maven Profile called “build-docker”. If you don’t want to use a profile, just remove the , , and build-docker elements.
Docker Terminal Command to deploy the Docker Image (from the directory where your pom.xml is located)= mvn clean deploy -Pbuild-docker docker:push
Note, the difference between Method #2 and #3 is that Method #3 has an extra for the deployment.
Method #3= Using Maven to automatically deploy to Docker Hub
Add this stuff to your parent pom.xml:
Go to C:\Users\Gene.docker\ directory and add this to your config.json file:
Now in your Docker Quickstart Terminal type= mvn clean install -Pbuild-docker
For those of you not using Maven Profiles, just type mvn clean install
Here is the screenshot of the success message:
Here is my full pom.xml and a screenshot of my directory structure:
Solution for Error #1= Do not sync the with maven deploy phase because then maven tries to deploy the image 2x and puts a timestamp on the jar. That’s why I used install .
Go into the hub, and create the repository first, and mark it as private. Then when you push to that repo, it will be private. This is the most common approach.
log into your docker hub account, and go to your global settings . There is a setting that allows you to set what your default visability is for the repositories that you push. By default it is set to public, but if you change it to private, all of your repositories that you push will be marked as private by default. It is important to note that you will need to have enough private repos available on your account, or else the repo will be locked until you upgrade your plan.
This topic provides basic information about deploying and configuring a registry
Before you can deploy a registry, you need to install Docker on the host.
Use a command like the following to start the registry container:
Pull the ubuntu:16.04 image from Docker Hub.
Tag the image as localhost:5000/my-ubuntu . This creates an additional tag for the existing image. When the first part of the tag is a hostname and port, Docker interprets this as the location of a registry, when pushing.
Push the image to the local registry running at localhost:5000 :
Remove the locally-cached images. This does not remove the localhost:5000/my-ubuntu image from your registry.
Pull the localhost:5000/my-ubuntu image from your local registry.
According to docs.docker.com , this is very insecure and is not recommended .
Edit the daemon.json file, whose default location is /etc/docker/daemon.json on Linux or C:\ProgramData\docker\config\daemon.json on Windows Server. If you use Docker for Mac or Docker for Windows , click Docker icon -> Preferences -> Daemon , add in the insecure registry .
If the daemon.json file does not exist, create it. Assuming there are no other settings in the file, it should have the following contents:
With insecure registries enabled, Docker goes through the following steps:
Restart Docker for the changes to take effect.
$docker tag IMAGE_ID UsernameOnDockerhub/repoNameOnDockerhub:latest
$docker push UsernameOnDockerhub/repoNameOnDockerhub:latest
Note : here
"repoNameOnDockerhub" : repository with the name you are mentioning has
to be present on dockerhub
Go here https://hub.docker.com/ to create a PRIVATE repository with name for example johnsmith/private-repository this is the NAME/REPOSITORY you will use for your image when building the image.
Second, I use " docker build -t johnsmith/private-repository:01 . " (where 01 is my version name) to create image, and I use " docker images " to confirm the image created such as in this yellow box below: (sorry I can not paste the table format but the text string only)
johnsmith/private-repository(REPOSITORY) 01(TAG) c5f4a2861d6e(IMAGE ID) 2 days ago(CREATED) 305MB(SIZE)
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How To Set Up a Private Docker Registry on Ubuntu 18.04 | DigitalOcean
How to push a docker image to a private repository - Stack Overflow
Docker private registry with Authentication| Standalone | Medium
GitHub - victorskl/ docker - private -registry: Running docker private ...
Docker - Private Registries - Tutorialspoint
Beovolytics integrates software assembly lines into large organizations by deploying solutions offered by the Cloud ecosystem.
Docker registry - It is a server that stores the Docker images for distribution. One can pull the images from registry to local or can push the locally build images to server for reuse in different servers or for different teams. We can simply compare the Docker registry with GitHub in its usage. Here we’re pushing the code along with its dependency in a Docker image format.
You should use the Registry if you want to:
Security - If you’re going to build it for a public use or if it is one of your side project it is OK to use the default Docker Hub for storing your images. Which by default is visible to everyone in the internet. But what if it is one of your organizations project? or it is having a code which shouldn't be accessed by anyone other than few authorized people. Well you cannot keep more than one image in private if you’re using free Docker Hub account.
While we have 100’s of servers already running behind our applications it is wise to use one of them for our need here to store and retrieve the images instantly.
Running registries in a container mode is a de-facto instructions you’ll get if you search for it. But I often wonder why people going over that procedure while they can do a standalone one much easier and efficient than that. You need to go over lots of hustles to make a perfect registry in a container mode say for example to persist its volume to disc or to have authentication enabled or to up and running 24x7 even after a unknown server restart etc.
We are going to install a package called docker-distribution in our server which acts as a private registry for us in a server. It is also one of the official method from Docker itself.
For Debian and Ubuntu distributions
After the installation of package the configuration and commands are pretty much same for all the distributions
We need to create a directory where the images will be stored securely. Lets say we’ll create a directory under root (/) directory as sources and another one as registry within it.
Lets create a password file with list of users we need. We can add users in the same file in future also if needed. We need htpasswd utility to create a encrypted passwords using known hashes. If it is not preset in your server it can be downloaded by below command.
Lets create a directory to store the password file within our registry directory.
To create a encrypted password with bcrypt encryption which is highly secured and recommended one among all other hashing use the below command. We need to provide the directory location with file name where encrypted password will be stored. Here the last parameter is a username which is user defined one. Let’s call it as a admin user and enter the password when it prompts.
Once the password is generated we can view it using any text editor/viewer
Which looks something similar to the below one
Lets edit the docker-distribution configuration file to make use of our password file and custom directories for storing the Docker images
Then change the filesystem location and add the authentication configurations like below.
Once we changed the configs and saved the file execute the below command to start the docker-distribution service.
The above config file will start the service in default port which 5000 in our case. We can verify the service by browsing the below api
If everything is successfully configured you will be prompted to enter the username and password which is admin:admin in our case and able to see the list of repositories in JSON format
All our images pushing towards the registry will be stored in the /sources/registry directory which is also holds the auth file inside it. So making a periodic backup of the registry is also convenient here.
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