Does a RHEL7 docker container need subscription?

On the Docker hub, you can find some Red Hat docker images , like

https://hub.docker.com/r/richxsl/rhel6.5/

or

https://hub.docker.com/r/lionelman45/rhel7/

but in order to update them, you will need a valid subscription

You will find Red Hat docker images on the Red Hat site, at

https://access.redhat.com/containers

this article summarizes what you need in order to build a Red hat docker image

http://cloudgeekz.com/625/howto-create-a-docker-image-for-rhel.html

it begins with

Pre-requisites Access to RHEL package repository.


With RHEL 8 Red Hat now offers a universal base image for docker containers which does not require a subscription.