Pulling an image from the registry is also straight forward and can be done using a single command. If you host it on a server, you will need a secure SLL connection, which we will look at in a later section.
Note: This only works if you host your registry on your local machine. Now we can push the image using the push command: docker push localhost:5000/my-alpine Localhost:5000/my-alpine latest e7d92cdc71fe 6 weeks ago 5.59MB The newly labeled image should now appear: docker imagesĪlpine latest e7d92cdc71fe 6 weeks ago 5.59MB docker pull alpineĭocker tag alpine localhost:5000/my-alpine For that, we are going to use the alpine Linux image because it is small and downloads fast.įirst, we need to pull the image and then tag it with the address of our registry as a prefix (localhost:5000 in our case). You are now ready to push an image to the registry, but first, you need to create a local image and provide it with the right tag.
You can now run the container using the following command: docker-compose up -dĪfter the download of the image has completed, and the container is running, we can continue with pushing an image to the registry. This allows us to send requests to port 5000 on the server that runs the registry. The configuration uses the official registry image and forwards the port 5000 of the container to the host machine. Now that you have an overview of registries and what they are used for let's continue by creating a private registry using docker-compose. logging, authentification, load balancing, etc. More privacy for proprietary and private images.
But where do these container images come from and how can you deploy your own.
How to create your own private Docker registry and secure itĭocker lets you bundle your application into different containers, which makes it easy to develop and deploy your applications.