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- #!/usr/bin/env bash
- set -e
- # DinD: a wrapper script which allows docker to be run inside a docker container.
- # Original version by Jerome Petazzoni <jerome@docker.com>
- # See the blog post: https://blog.docker.com/2013/09/docker-can-now-run-within-docker/
- #
- # This script should be executed inside a docker container in privileged mode
- # ('docker run --privileged', introduced in docker 0.6).
- # Usage: dind CMD [ARG...]
- # apparmor sucks and Docker needs to know that it's in a container (c) @tianon
- export container=docker
- if [ -d /sys/kernel/security ] && ! mountpoint -q /sys/kernel/security; then
- mount -t securityfs none /sys/kernel/security || {
- echo >&2 'Could not mount /sys/kernel/security.'
- echo >&2 'AppArmor detection and --privileged mode might break.'
- }
- fi
- # Mount /tmp (conditionally)
- if ! mountpoint -q /tmp; then
- mount -t tmpfs none /tmp
- fi
- if [ $# -gt 0 ]; then
- exec "$@"
- fi
- echo >&2 'ERROR: No command specified.'
- echo >&2 'You probably want to run hack/make.sh, or maybe a shell?'
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