Creating a Docker image

The instructions describe how to create and build a Docker image from a Dockerfile.

CLI

Create a file named Dockerfile and add the following lines to it:
```
FROM ubuntu:latest
CMD echo "Hi, I'm inside"
```
The described Docker image is based on Ubuntu and will execute one simple command.
Assemble the Docker image. For <registry ID>, use the ID received when creating the registry.
```
docker build . \
  -t cr.il.nebius.cloud/<registry ID>/ubuntu:hello
```
The -t flag assigns a URL in the format cr.il.nebius.cloud/<registry ID>/<Docker image name>:<tag> to the Docker image. You can build Docker images without any tag. In this case, the Docker CLI will assign the default label: latest.

Once completed, these commands will create a Docker image with the hello tag in your repository as well as the full address of the repository, including:

Container Registry service address cr.il.nebius.cloud.
ID of your registry <registry ID>.
Name of your ubuntu repository.