I did a test, inside lxd container ubuntu 16.04, installed docker.io, then do following:
docker pull node:boron
time docker run node:boron echo ‘hello’
I repeated the same procedure in the host running ubuntu 16.04, and got:
0.02user 0.00system 0:00.48elapsed 5%CPU (0avgtext+0avgdata 18908maxresident)k
0inputs+0outputs (0major+1389minor)pagefaults 0swaps
It is so slow inside the container to run a docker app, more than 1 minute while the same docker app runs in the host takes only 0.02 seconds, is this same to other docker images?