How can I delete an image from my private Docker Registry?
I see no info in the official Docker Docs.
click here for the previous answers on stackoverFlow
for more details you can read the docs :
https://docs.docker.com/registry/spec/api/#listing-repositories
Related
For example, I have an internal docker registry for my kube cluster, hosted on internal-docker-registry.io:5000.
When the pod from the kube cluster pulling image busybox, I don't want to pull from docker hub docker.io. But instead I want it to pull from internal-docker-registry.io:5000.
Note that I cannot change the image name to internal-docker-registry.io:5000/busybox since I don't own the spec and there are too man these kind of third party image in my cluster.
I have posted community wiki answer to summarize the topic:
As David Maze well mentioned in the comment:
there is no "image registry search list"; an image name without a registry always uses docker.io, to avoid surprises where e.g. FROM ubuntu means something different depending on local configuration.
So if you can't change the image name to internal-docker-registry.io:5000/busybox then unfortunately you don't have the option to get the image from your private registry (according to David's comment).
See also similar questions:
How to change the default docker registry from docker.io to my private registry?
How to change default K8s cluster registry?
Here you can find a complete guide on how to accomplish this in the official kubernetes documentation [1]
[1] https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
I have a docker registry server for my team and I want to do the following when a user pulls image from the registry:
Check if the image exists in my registry.
If yes, return the image from my registry and end here.
If no, try to pull the image from the official docker hub registry. cache the image in my registry for further use and then return it to the user and end here.
In my case, I want my docker register as a bridge. Not only it could store private images, but also cache the images to save the bandwidth.
Do you have any idea to do that?
I have recently implemented such a use case, below is the configuration you have to use to make that happen.
proxy:
remoteurl: https://registry-1.docker.io
username: [username]
password: [password]
Add this configuration in your config.yml file, which you will be using with your registry.
Update the above config with your docker hub credentials.
This use case in particular is known as Registry as a pull through cache.
Official Docker documentation link : https://docs.docker.com/registry/recipes/mirror/
Short answer - There is no out of the box option provided by Docker. You have to run the docker pull command twice.
Pull it from your local repo using the below syntax.
$ docker pull myregistry.local:5000/testing/test-image
If the above fails, pull it from docker repo.
$ docker pull test-image
Refer official docs here.
Aim: to deploy a private registry
Discussion
private repository
I have read multiple posts and now I am confused. I have tried to run a docker container that should serve a private docker registry, but it returns an empty UI. Some posts indicate that it has been deprecated, but some other do not.
images
I used to navigate to dockerhub, but now there is https://store.docker.com?
Questions
Has docker registry been phased out?
Should one now use https://store.docker.com in stead of docker hub?
Docker hub still exists and will remain for the open source projects as it always has.
Docker store is a new offering for commercial images.
The standalone registry does not have a UI, don't believe it ever has. It's intended to be accessed with docker push and docker pull commands.
Can someone explain me 'Docker-registry'?
I face it in OpenShift but it's hard to understand what it is at the moment.
The Docker Registry is where you push and pull images. When you go docker pull {myimagename} you are pulling from the Docker Registry. Likewise, when you go docker push {username}/{imagename} you are pushing to the Docker Registry. The Docker Registry is available as a public or private registry. The public is available at hub.docker.com and the private is available for purchase from docker.com. There is also a free open source version of the registry available on github.com, though the open source version has been deprecated and is being replaced by the Docker Trusted Registry.
I read the tutorial in this,and it show me can use these commands to pull image to docker registry,like that:
docker pull ubuntu && docker tag ubuntu localhost:5000/batman/ubuntu
docker push localhost:5000/batman/ubuntu
I want to know whether I need to tag already image when I pull image to registry. Is it just only way to pull image to docker registry?
You always need to tag your images first with a tag containing repository information. Then you can push them to your private registry. Please refer also to this blogpost.