How can I install API Portal from Docker store

I tried to install API portal docker container as guided at
But I failed and got the following error message when I run ‘./ api’ command with docker store login status.

Is there a problem with aris docker repository?

Installing product API Portal
Standard database system (Postgres) will be installed
All docker volume will remain with existing data.
++++ start: docker-compose -p api up ++++
Creating network “api_arisnet” with the default driver
Pulling accserver (softwareag/aris-accserver:…
The image for the service you’re trying to recreate has been removed. If you continue, volume data could be lost. Consider backing up your data before continuing.

Continue with the new image? [yN]y
Pulling accserver (softwareag/aris-accserver:…
pull access denied for softwareag/aris-accserver, repository does not exist or may require ‘docker login’
++++ end: docker-compose up
+++++ End aris docker refresh +++++

Did you login already into docker using docker login command?

docker login -p -u ?

The images are stored in docker private registry and requires login accounts using which you have checked out the API Portal product.

docker login must be done prior to executing