Why not both?
Big companies may prefer 1.0a for security and startups OAuth2.0 for flexibility about permissions and growth with easier integration by partners
I agree with this. For a Docker container to be valuable to companies (i.e. willing to pay money for it, I assume that's the goal), it should support both.
How are you planning to integrate the Docker container with the business authentication/authorization? LDAP?
How are you planning to integrate the Docker container with the business authentication/authorization? LDAP?