diff --git a/selenium/docker-compose-hub.yml b/selenium/docker-compose-hub.yml
index 2af712a..bd5ae3d 100644
--- a/selenium/docker-compose-hub.yml
+++ b/selenium/docker-compose-hub.yml
@@ -2,26 +2,33 @@ hub:
   image: selenium/hub
   ports:
     - "4444:4444"
+  environment:
+    - GRID_TIMEOUT=30000
+    - GRID_BROWSER_TIMEOUT=30000
   restart: always
 
 firefox:
   image: selenium/node-firefox-debug
   ports:
     - "5555"
-    - "5900"
+    - "5901:5900"
   links:
     - hub
   environment:
-    - JAVA_OPTS=-Xmx512m
+    - JAVA_OPTS=-Xmx768m
+    - NODE_MAX_INSTANCES=5
+    - NODE_MAX_SESSION=5
   restart: always
 
 chrome:
   image: selenium/node-chrome-debug
   ports:
     - "5555"
-    - "5900"
+    - "5902:5900"
   links:
     - hub
   environment:
-    - JAVA_OPTS=-Xmx512m
+    - JAVA_OPTS=-Xmx768m
+    - NODE_MAX_INSTANCES=5
+    - NODE_MAX_SESSION=5
   restart: always
diff --git a/selenium/docker-compose-node.yml b/selenium/docker-compose-node.yml
new file mode 100644
index 0000000..39fef2a
--- /dev/null
+++ b/selenium/docker-compose-node.yml
@@ -0,0 +1,13 @@
+firefox:
+  image: selenium/node-firefox
+  ports:
+    - "5555:5555"
+    - "5900:5900"
+  environment:
+    - JAVA_OPTS=-Xmx512m
+    - NODE_MAX_INSTANCES=2
+    - NODE_MAX_SESSION=2
+    - SE_OPTS=-host 5.6.7.8 -port 5555
+    - HUB_PORT_4444_TCP_ADDR=1.2.3.4
+    - HUB_PORT_4444_TCP_PORT=4444
+  restart: always