github.com/demonoid81/moby@v0.0.0-20200517203328-62dd8e17c460/hack/dind (about) 1 #!/bin/sh 2 set -e 3 4 # DinD: a wrapper script which allows docker to be run inside a docker container. 5 # Original version by Jerome Petazzoni <jerome@docker.com> 6 # See the blog post: https://blog.docker.com/2013/09/docker-can-now-run-within-docker/ 7 # 8 # This script should be executed inside a docker container in privileged mode 9 # ('docker run --privileged', introduced in docker 0.6). 10 11 # Usage: dind CMD [ARG...] 12 13 # apparmor sucks and Docker needs to know that it's in a container (c) @tianon 14 export container=docker 15 16 if [ -d /sys/kernel/security ] && ! mountpoint -q /sys/kernel/security; then 17 mount -t securityfs none /sys/kernel/security || { 18 echo >&2 'Could not mount /sys/kernel/security.' 19 echo >&2 'AppArmor detection and --privileged mode might break.' 20 } 21 fi 22 23 # Mount /tmp (conditionally) 24 if ! mountpoint -q /tmp; then 25 mount -t tmpfs none /tmp 26 fi 27 28 if [ $# -gt 0 ]; then 29 exec "$@" 30 fi 31 32 echo >&2 'ERROR: No command specified.' 33 echo >&2 'You probably want to run hack/make.sh, or maybe a shell?'