Fix agent rc script to use grpc addr visible from host

Signed-off-by: Darko Draskovic <darko.draskovic@gmail.com>

alpine/agent

@@ -8,8 +8,9 @@ depend() {
 }
 
 start() {
+    CC_AGENT_GRPC_ADDR=$(ifconfig eth0 | grep "inet addr" | cut -d ':' -f 2 | cut -d ' ' -f 1):7002
     ebegin "Starting cocos-agent"
-    start-stop-daemon -S -q -b -m -p /run/cocos-agent.pid -x $command -- $command_args
+    env CC_AGENT_GRPC_ADDR="${CC_AGENT_GRPC_ADDR}" start-stop-daemon -S -q -b -m -p /run/cocos-agent.pid -x $command -- $command_args
     eend $?
 }
 

cmd/agent/main.go

@@ -47,7 +47,7 @@ const (
 	envServerKey  = "MF_AGENT_SERVER_KEY"
 	envSecret     = "MF_AGENT_SECRET"
 	envJaegerURL  = "MF_JAEGER_URL"
-	envGRPCAddr   = "CC_AGENT_GRPC_PORT"
+	envGRPCAddr   = "CC_AGENT_GRPC_ADDR"
 )
 
 type config struct {