Document competing containerization efforts and how to choose

[pdurbin]

As @johannes-darms has pointed out, it can be confusing for a newcomer who stumbles upon a variety of containerization efforts for Dataverse:

• https://github.com/IQSS/dataverse/blob/develop/docker-compose-dev.yml
• https://github.com/IQSS/dataverse/blob/develop/docker/compose/demo/compose.yml
• https://github.com/IQSS/dataverse-docker
• https://github.com/gdcc/dataverse-kubernetes
• https://github.com/EOSC-synergy/dataverse-kubernetes
• https://github.com/link89/dataverse-docker

Which one should they choose?

Let's clean up and reorganize the information we have at the following pages:

• https://guides.dataverse.org/en/6.2/developers/containers.html
• https://guides.dataverse.org/en/6.2/container/intro.html

We can also add more to the README at https://github.com/IQSS/dataverse/tree/develop/docker which relates to this issue:

• replace Dockerfile in root with docker dir, mention Docker in main README #10157