Implement entrypoint for docker_swarm_service

[pedroterzero]

SUMMARY

It would be good to be able to define the entrypoint for a service. Unless there's a reason why it shouldn't be possible, but then perhaps it would be good to document it.

ISSUE TYPE

• Feature Idea

COMPONENT NAME

docker_swarm_service

ADDITIONAL INFORMATION

Allow to configure entrypoint for a service.

      community.docker.docker_swarm_service:
        image: "mongo:7.0"
        entrypoint: "docker-entrypoint.sh"
        # ...