How can I retrieve a list of available images from a Docker Registry v2?

To retrieve a list of available images from a Docker Registry v2, you can use the Docker Registry API. Here are the steps:

Using the Docker Registry API

1. Get the list of repositories: Send a GET request to https://<registry-url>/v2/_catalog
2. Get the list of tags for a repository: Send a GET request to https://<registry-url>/v2/<repository-name>/tags/list
3. Get the manifest for a specific image: Send a GET request to https://<registry-url>/v2/<repository-name>/manifests/<tag-name>

Example Using curl

Get the list of repositories
curl -X GET https://<registry-url>/v2/_catalog

Get the list of tags for a repository
curl -X GET https://<registry-url>/v2/<repository-name>/tags/list

Get the manifest for a specific image
curl -X GET https://<registry-url>/v2/<repository-name>/manifests/<tag-name>

Note:

– Replace <registry-url> with the URL of your Docker Registry.
– Replace <repository-name> with the name of the repository you want to query.
– Replace <tag-name> with the name of the tag you want to query.

Make sure to authenticate with the registry before making API calls. You can do this by logging in with the Docker CLI or by-passing authentication headers with your API requests.