If you happen to’re utilizing containers in your workflow, then you definitely want a Docker registry. A Docker registry is a spot the place you possibly can retailer and handle your Docker pictures.

Docker registries may be public or personal. The Docker Hub is the best-known instance of a public Docker registry, however there are numerous others, corresponding to quay.io and gcr.io. In order for you extra management over your Docker pictures, then you possibly can create your individual personal Docker registry utilizing instruments like Docker Trusted Registry (DTR) or Registry 2.0.

Docker registries are an vital a part of the DevOps toolchain and are utilized by thousands and thousands of individuals each day. If you happen to’re utilizing Docker containers in your workflow, then you definitely’re most likely already utilizing a Docker registry.

What’s a Cloud-native Workflow?

A cloud-native workflow is a workflow that’s designed to work nicely in a cloud-computing surroundings. There are various various kinds of cloud-native workflow, however all of them have one factor in frequent: they’re designed to make the most of the distinctive traits of cloud computing.

For instance, a cloud-native workflow may be designed to utilize the scalability and adaptability of the cloud. Or, it may be designed to utilize the cloud’s pay-as-you-go pricing mannequin.

Cloud-native workflow can be utilized in any sort of cloud computing surroundings, together with public clouds, personal clouds, and hybrid clouds.

Transferring on, we’ll now discover the alternative ways to make use of a Docker registry in your cloud-native workflow. There are various alternative ways to make use of a Docker registry, however listed here are seven of the commonest use circumstances:

1. Pulling pictures from a Docker registry

The most typical use case for a Docker registry is solely pulling pictures from it. If you happen to’re utilizing Docker containers in your workflow, then you definitely’re most likely already doing this. Everytime you run the Docker pull command, you’re pulling a picture from a Docker registry.

By default, the Docker pull command will pull pictures from the Docker Hub, however you may also configure it to drag from different Docker registries.

2. Pushing pictures to a Docker registry

The second most typical use case for a Docker registry is pushing pictures to it. If you happen to’re utilizing Docker containers in your workflow, then you definitely’re most likely already doing this as nicely.

Everytime you run the Docker push command, you’re pushing a picture to a Docker registry. By default, the Docker push command will push pictures to the Docker Hub, however you may also configure it to push to different Docker registries.

3. Creating and managing Docker repositories

A Docker repository is solely a set of Docker pictures with a shared identify. For instance, the Docker Hub has a repository known as “ubuntu” that incorporates the entire Docker pictures for Ubuntu.

If you wish to create your individual Docker repository, you should use the Docker repository command. This command allows you to create, delete, and handle Docker repositories.

4. Trying to find Docker pictures

If you happen to’re in search of a particular Docker picture, then you should use the Docker search command. This command will search the entire configured Docker registries for pictures that match your search standards.

5. Working with Docker tags

Each Docker picture has a tag related to it. The tag is solely a reputation that’s used to determine a particular picture. For instance, the “ubuntu” repository on the Docker Hub has two tags: “newest” and “lts”.

The “newest” tag all the time factors to the newest Docker picture for Ubuntu, whereas the “lts” tag factors to the long-term assist Docker picture for Ubuntu. You should use the Docker tag command to handle Docker tags.

6. Deleting Docker pictures

If you happen to not want a Docker picture, then you should use the Docker “rmi” command to delete it. This command will take away the Docker picture out of your system and from any configured Docker registries.

7. Sharing Docker pictures with others

One of many nice issues about Docker is that it makes it simple to share pictures with others. When you’ve got a Docker picture that you simply need to share with another person, you should use the Docker push command to push it to a Docker registry. Then, the opposite individual can use the Docker pull command to drag the picture from the Docker registry.

Conclusion

These are simply seven of the commonest methods to make use of a Docker registry in your workflow. If you happen to’re utilizing Docker containers, then you must be utilizing a Docker registry. The Docker Hub is the most well-liked Docker registry, however there are numerous different choices accessible. Select the Docker registry that most closely fits your wants and begin utilizing it in your workflow as we speak!


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