To effectively search for a specific image, first we need to understand the Docker image naming schema and tags concept. We have already mentioned it before; let's look at it now in detail.
The full image name has the following syntax:
{registry_host}/(_|/{user_or_org_namespace})/{repository}:{tag}
Let's explore it in detail, image names start with a namespace and a slash. For example, the image named hello-world
created and uploaded by user tutum
(which is an Apache image responding with hello-world
message on port 80
, by the way) will begin with this part: tutum/hello-world
.
There can also be images with no namespace prefix-these will be images from the so-called official repositories. The official repositories are certified repositories from vendors and contributors to Docker such as Red Hat, Oracle, and Canonical. And of course, you can use them to build your own applications and services. An example of the official images can be the most...