Rename docker-compose.yml files --> compose.yaml

[spwoodcock]

Issue

• Docker compose recently made the default compose file compose.yml instead of docker-compose.yml.
• docker-compose.yml may be deprecated in future? It's also docker-centric, when we may want to use OCI tools such as Podman compose.

Solution

• Rename all docker-compose.yml files --> compose.yml.
• Update all references to docker-compose file to the new file names.
  • In this repo.
  • Plus in fmtm-installer sh script.

[!NOTE] yaml extension is also preferred over yml in the official YAML spec.