Constant ENTRYPOINT_RL 

pub const ENTRYPOINT_RL: &str = "docker/entrypoint-rl.sh";

rl target container entrypoint script (execs mecha10-launcher –target rl) - a distinct filename from ENTRYPOINT_REMOTE since both docker/entrypoint.sh and this file coexist in the same project (remote and rl are independent, both-scaffolded targets).