From 77a5b0d032a6fa215e40d300c1921f6d724d75e6 Mon Sep 17 00:00:00 2001
From: Justin Cormack <justin.cormack@unikernel.com>
Date: Wed, 20 Jan 2016 14:40:45 +0000
Subject: [PATCH] Use a config file from the database if present

See issue https://github.com/docker/pinata/issues/690

Note there is not yet a restart mechanism.

Signed-off-by: Justin Cormack <justin.cormack@unikernel.com>
---
 alpine/packages/docker/etc/init.d/docker | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/alpine/packages/docker/etc/init.d/docker b/alpine/packages/docker/etc/init.d/docker
index 41f5f000f..c42fb4788 100755
--- a/alpine/packages/docker/etc/init.d/docker
+++ b/alpine/packages/docker/etc/init.d/docker
@@ -2,11 +2,10 @@
 
 export DOCKER_RAMDISK="true"
 
-DOCKER_OPTS="${DOCKER_OPTS:--s aufs}"
+DOCKER_OPTS="${DOCKER_OPTS:- -s aufs}"
 command="${DOCKER_BINARY:-/usr/bin/docker}"
 
 pidfile="${DOCKER_PIDFILE:-/run/${RC_SVCNAME}.pid}"
-command_args="daemon -p \"${pidfile}\" ${DOCKER_OPTS}"
 
 if cat /proc/cmdline | grep -q 'com.docker.groupDir'
 then
@@ -14,6 +13,15 @@ then
 	[ -d "${GROUPDIR}" ] && DOCKER_LOGFILE="${GROUPDIR}/${RC_SVCNAME}.log"
 fi
 
+if cat /proc/cmdline | grep -q 'com.docker.database'
+then
+	DATABASE="$(cat /proc/cmdline | sed -e 's/.*com.docker.database="//' -e 's/".*//')"
+	CONFIGFILE="/Database/branch/master/ro/${DATABASE}/etc/docker/daemon.json"
+	[ -s ${CONFIGFILE} ] && DOCKER_OPTS="${DOCKER_OPTS} -config-file ${CONFIG_FILE}"
+fi
+
+command_args="daemon -p \"${pidfile}\" ${DOCKER_OPTS}"
+
 DOCKER_LOGFILE="${DOCKER_LOGFILE:-/var/log/${RC_SVCNAME}.log}"
 start_stop_daemon_args="--background \
         --stderr \"${DOCKER_LOGFILE}\" --stdout \"${DOCKER_LOGFILE}\""