How can a container image be uploaded to a registry?

To upload a container image to a registry (for example, Docker Registry), the following steps are usually performed:

1. Login to the registry (if required):

docker login registry.example.com

2. Tag the image — assign a name to the image with the registry address and repository:

docker tag local-image:tag registry.example.com/myrepo/myimage:tag

3. Push the image to the registry:

docker push registry.example.com/myrepo/myimage:tag

After this, the image will be uploaded to the specified registry and will be available for subsequent use or deployment.

If another tool is used (for example, Podman or specialized CI/CD systems), the concept remains the same: login, tag, push.