Radically easy to access on brand approved content for distribution and omnichannel performant delivery. AEM Assets Content Hub and Dynamic Media with OpenAPI capabilities is now GA.
As of AEM 6.5, Docker/containerization is not supported officially. That being said, It might be supported in the future. Check [1] for supported platforms.
If you have a static user and group list, you can package them up and keep it in nexus / S3. You can pull in and install this package by executing a cURL command on post image pick up.