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switch root to a tmpfs filesystem, so pivot_root works, should make #57 work now

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Signed-off-by: Justin Cormack <justin.cormack@docker.com>
This commit is contained in:
Justin Cormack 2016-03-29 22:09:23 +01:00
parent 38aef85f6a
commit 4dec575407
3 changed files with 10 additions and 4 deletions
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5
alpine/Dockerfile
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@ -90,7 +90,8 @@ RUN \
rc-update add hupper default && \ rc-update add hupper default && \
rc-update add hv_fcopy_daemon default && \ rc-update add hv_fcopy_daemon default && \
rc-update add hv_kvp_daemon default && \ rc-update add hv_kvp_daemon default && \
rc-update add hv_vss_daemon default && \ rc-update add hv_vss_daemon default
ln -s /bin/busybox /init
COPY init /
CMD ["/bin/sh"] CMD ["/bin/sh"]

7
alpine/init Executable file
View File

@ -0,0 +1,7 @@
#!/bin/sh
/bin/mount -t tmpfs tmpfs /mnt
/bin/cp -a / /mnt 2>/dev/null
exec /sbin/switch_root /mnt /sbin/init

2
alpine/packages/docker/etc/init.d/docker
View File

@ -30,8 +30,6 @@ start()
rm -rf /var/tmp/log rm -rf /var/tmp/log
fi fi
export DOCKER_RAMDISK="true"
command="${DOCKER_BINARY:-/usr/bin/docker}" command="${DOCKER_BINARY:-/usr/bin/docker}"
pidfile="/run/docker.pid" pidfile="/run/docker.pid"