The images downloaded directly from Docker Hub, or Quay.io are for a limited trial of the Enterprise version of Content Services that goes into read-only mode after 2 days. For a longer (30-day) trial, get the Alfresco Content Services Download Trial.
Note
A Quay.io account is needed to pull the Docker images that are needed for the Transform Service:
alfresco/alfresco-transform-router
The other images are available in DockerHub:
alfresco/alfresco-shared-file-storealfresco/alfresco-transform-core-aio