To run the services, we use docker-compose up inside the directory where the docker-compose.yml file resides. On the other hand, registry-frontend exposes port 80 only to other services defined in the file, while accessing it from outside is bounded to port 8080. In the case of the registry container, port 5000 is accessible from everywhere. Ports also links between an external port (defined on the host) to a container assigned port. Only the internal port can be specified in such case. Settings? the difference is ports make the ports defined accessible to the host as well as other services in the compose file, whereas expose actually expose the ports only to other services without publishing them to the host machine. The linksĬonfiguration links the container the another service, in our case to the registry.ĭon’t you wonder what’s the difference between ports Because we use docker-compose, it is available for us by name.
The registry-frontend container uses ENV_DOCKER_REGISTRY_HOST and ENV_DOCKER_REGISTRY_PORT as the address to which it connects. The environment variable REGISTRY_STORAGE_DELETE_ENABLED allows you delete images from the registry, and REGISTRY_HTTP_ADDR binds the listening address. The registry and registry-frontend are the container names in my stack. Let’s briefly break this down, as its just plain configuration (without password, S3 or SSL). Image: konradkleine/docker-registry-frontend:v2
Here’s the docker-compose.yml file we start with: We can use docker-compose to run the app stack, instead of running each container separatley. An app stack is a group of apps (stack) that is linked together to perform certain tasks. Each one of the components runs inside its own container, which forms the app stack. It has a front-end component (which is optional) that allows you to access the registry data from a browser. The registry app itself runs in a container. For the rest of this post, I assume you read the Registry OverviewĪt the official site.
Docker run image from local registry how to#
I’ll explain how to implement the three items mentioned above. In this post, I address the issues I had encountered when I deployed our registry server. You should read it to get a grasp of what is it and how to run it.
The official Docker documentation covers the subject in-depth. “The Registry is a stateless, highly scalable server side application that stores and lets you distribute Docker images.” Store the images on locally or in the cloud (S3/Azure/GoogleCloud).Or, you can just run your own Docker Registry and have the flexability to: If you need to keep them private, this service costs money.
Docker run image from local registry free#
, but a free account obligates you to share the images. I went over the official docs which are very good, and looked up some 101 tutorials to get started. I remember the day I started using Docker.
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