version: "3"
services:
    loop1:
      image: busybox
      command: ["/bin/sh", "-c", "for i in `seq 1 10000`; do echo \"loop1: $$i\"; sleep 1; done"]
    loop2:
      image: busybox
      command: ["/bin/sh", "-c", "for i in `seq 1 10000`; do echo \"loop2: $$i\"; sleep 3; done"]