An Azure container registry stores and manages private Docker container images, similar to the way Docker Hub stores public Docker images. You can use the Docker command-line interface (Docker CLI) for login, push, pull, and other operations on your container registry. After you login to the registry you can run push command to upload the image. Below is an sample of that command docker push myregistry.azurecr.io/samples/nginx Reference: https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-docker-cli