$(aws ecr get-login –registry-ids <accountID_of_repository> --region <region>)

SYNOPSIS
get-login
[--registry-ids <value> [<value>...]]
[--include-email | --no-include-email]

OPTIONS
--registry-ids (string) A list of AWS account IDs that correspond to
the Amazon ECR registries that you want to log in to.

   --include-email | --no-include-email (boolean) Specify if the '-e' flag
   should  be  included in the 'docker login' command. The '-e' option has
   been deprecated and is removed in docker version 17.06 and  later.  You
   must specify --no-include-email if you're using docker version 17.06 or
   later. The default behavior is to include the '-e' flag in the  'docker
   login' output.