fix update guichet

cluster/prod/app/guichet/deploy/directory.hcl

@@ -13,11 +13,12 @@ job "guichet" {
     task "guichet" {
       driver = "docker"
       config {
-        image = "dxflrs/guichet:18"
+        image = "dxflrs/guichet:57fvz82v8mi7ff0jh01mkvqj6lf09szs"
+	args = [ "server", "-config", "/etc/config.json" ]
         readonly_rootfs = true
         ports = [ "web_port" ]
         volumes = [
-          "secrets/config.json:/config.json"
+          "secrets/config.json:/etc/config.json"
         ]
       }