Tail stdout from multiple Docker containers -

i have script starts 10 containers in background mode (fig -d option). want aggregate stdout or log in /var/log of them. how can this?

the containers started using different docker-compose files can not docker-compose target1 target2 target3

docker logs accepts 1 container parameter.

i considering creating volume /var/log on containers, mapping them directory outside of docker, making sure logs not have colliding name , using bash tail -f * . appreciate more elegant solution

this bash script want:

docker-logs

#!/bin/bash  while [ $# -ne 0 ]     (docker logs -f -t --tail=10 $1|sed -e "s/^/$1: /")&     shift done wait 

usage:

$ docker-logs containerid1 containerid2 ... containeridn 

the output of script has each line tracked logs prepended container id.

the script works in --follow mode , must interrupted ctrl-c.

note options of docker logs hardcoded in script. if need able control options of docker logs command line need parse command line arguments (for example getopts).