Index: docker-20.10.4/contrib/init/sysvinit-redhat/docker
===================================================================
--- docker-20.10.4.orig/contrib/init/sysvinit-redhat/docker
+++ docker-20.10.4/contrib/init/sysvinit-redhat/docker
@@ -41,6 +41,9 @@ logfile="/var/log/$prog"
 # which is the variable name expected by the upstream sysvinit script.
 OPTIONS="${OPTIONS:-${other_args}}"
 
+# How many seconds to wait for the pidfile to appear after starting the daemon.
+# The default value from upstream is 10.
+DAEMON_PIDFILE_TIMEOUT="${DAEMON_PIDFILE_TIMEOUT:-10}"
 
 prestart() {
 	service cgconfig status > /dev/null
@@ -70,10 +73,8 @@ start() {
 		"$unshare" -m -- nohup $exec ${OPTIONS} ${DOCKER_STORAGE_OPTIONS} >> $logfile 2>&1 &
 		pid=$!
 		touch $lockfile
-		# wait up to 10 seconds for the pidfile to exist.  see
-		# https://github.com/docker/docker/issues/5359
 		tries=0
-		while [ ! -f $pidfile -a $tries -lt 10 ]; do
+		while [ ! -f $pidfile -a $tries -lt ${DAEMON_PIDFILE_TIMEOUT} ]; do
 			sleep 1
 			tries=$((tries + 1))
 			echo -n '.'