My aim is to show the portability of docker, and thus being able to export docker container images from the registry/repository to an external docker user.
I can perfectly pull the image from the machine with ICE CLI installed, and authentication (ice login passed), but if I use an other machine, the command docker pull registry-ice.ng.bluemix.net/ibmnode or docker pull registry-ice.ng.bluemix.net/kapi/nginx-test, I get the same result : authentication required.
My question is : is it possible to allow some docker images to be available for everyone, without authentication ?
I can obviously pull the image from the machine with ice logged in, and then re-export/push it, but it is not the easiest way.
Has anyone an idea, on how to do this ?
Thanks for reading
As you discovered, IBM Containers currently requires a Bluemix authentication token when connecting to the Bluemix container registry. There is not a public registry where anyone can pull images.
But your idea is interesting and we could look into providing some public images on a public registry. For now, you will need to sign in.
Related
I am trying to pull and push images between Docker Desktop and Azure and Visual Studio 2019.
currently I can push from VS2019 by Publish option and I can push to Docker and Azure Container Registry.
How do I pull from Azure to Docker? I believe there is an issue with security accounts between the 2 systems. After all, my Docker account is not my Azure account. I came across this article
https://learn.microsoft.com/en-us/azure/container-registry/container-registry-auth-service-principal
which contains a script. Is this the right article to solve my problem? I made a copy of the script but I am struggling to run it. If I save it to assignpermissions.sh file and run wsl ./assignpermissions.sh it complains that az does not exist.
So
Is that the right article to help me (eventually) pull and push between Azure and Docker?
How do I run the script when calling az is causing an error?
Any other things I need to watch out for in the next step?
Log in to a registry
There are several ways to authenticate to your private container registry.
Azure CLI
The recommended method when working in a command line is with the Azure CLI command az acr login. For example, to log in to a registry named myregistry, log into the Azure CLI and then authenticate to your registry:
az login
az acr login --name myregistry
Azure PowerShell
The recommended method when working in PowerShell is with the Azure PowerShell cmdlet Connect-AzContainerRegistry. For example, to log in to a registry named myregistry, log into Azure and then authenticate to your registry:
Connect-AzAccount
Connect-AzContainerRegistry -Name myregistry
You can also log in with docker login. For example, you might have assigned a service principal to your registry for an automation scenario. When you run the following command, interactively provide the service principal appID (username) and password when prompted. For best practices to manage login credentials, see the docker login command reference:
docker login myregistry.azurecr.io
Both commands return Login Succeeded once completed.
Note: You might want to use Visual Studio Code with Docker extension for a faster and more convenient login.
Tip: Always specify the fully qualified registry name (all lowercase) when you use docker login and when you tag images for pushing to your registry. In the examples in this article, the fully qualified name is myregistry.azurecr.io.
Push the image to your registry
Now that you've tagged the image with the fully qualified path to your private registry, you can push it to the registry with docker push:
docker push myregistry.azurecr.io/samples/nginx
Pull the image from your registry
Use the docker pull command to pull the image from your registry:
docker pull myregistry.azurecr.io/samples/nginx
I have few docker images composed together in the stack using docker-compose.yml.
Now I want to transfer whole docker compose stack to the other host machine without uploading to the dockerhub,
And deploy it on the docker swarm.
I saw there is a thing called docker compose bundle, would that help?
If you’re deploying on a multi-host swarm (or something similar like Kubernetes or Nomad) you all but need a Docker registry. It doesn’t specifically have to be Docker Hub — quay.io, Amazon’s ECR, Google’s GCR, and self-hosted registries all work fine — but you do need to have pushed the built images somewhere where the orchestrator can retrieve them by name.
I’ve never used docker-compose bundle myself, but its documentation also notes that its operation “requires interaction with a Docker registry”.
The only real alternative is using docker save and docker load to manually move images between machines, but as a manual process it will get tedious very quickly, and you need to make sure an identical set of images are on every machine for consistency. Using a registry will be vastly easier.
The easyest way to do it is to use a Docker registry. The problem with Docker Hub is that you can only have one private registry, the rest must be public or paid.
Thankfully, there are other (free) alternatives:
Deploy your own private registry. Here is a nice tutorial where you can try it in the browser.
Use a free private registry. I personnaly use Codefresh. It can automatically build your image from a private repo (like bitbucket who has free plan too), but you can also just use it like a "simple" docker registry and push and pull your Docker images there.
I've setup a docker up login on the docker hub website.
I've run sudo docker login and put my credentials in.
When I run
sudo docker pull sequenceiq/hadoop-docker:2.7.1
It downloads 5 hashes and then I get
unauthorized: authentication required
and then the pull finishes.
This person can reproduce this issue.
Note that this is different to two similar questions because they're about docker push and not docker pull.
There is a little bit of chatter here about docker pull authorization issues related to config.json format and the UTC date. I don't see how they're relevant to this situation.
My question is: Why do I get unauthorized: authentication required from a docker pull from docker hub?
Interestingly enough - even without a proxy on your mac - Docker for Mac runs through a proxy!
To switch it off (by default it is on) go to your Docker menu and choose Preferences then Proxies and change the setting from Use System Proxy to No Proxy.
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.
I am looking for documentation for docker login, I need to login to a registry to pull docker image and I need to do it remotely using docker remote APIs.
But unfortunately I am unable to find docker remote API docs, any help would be greatly appreciated.
API doc :
https://docs.docker.com/engine/reference/api/docker_remote_api_v1.19/
Thanks in advance.
Sarath Krishnan
you go as
docker login your.domain.to.the.registr.without.protocol.or.port
enter username
enter password
now you can pull using docker pull your.domain.to.the.registr.without.protocol.or.port/youimage
Ensure your registry runs behind a SSL proxy / termination, or you run into security issues. Consider reading this in this case https://docs.docker.com/registry/insecure/