diff --git a/common.yml b/common.yml
new file mode 100644
index 00000000..99579bb3
--- /dev/null
+++ b/common.yml
@@ -0,0 +1,7 @@
+version: '2'
+services:
+  dockerapp:
+    ports:
+      - "5000:5000"
+  redis:
+    image: redis:3.2.0
diff --git a/docker-compose.yml b/docker-compose.yml
index 0ce6db0b..c768d016 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,10 +1,13 @@
 version: "3.0"
 services:
   dockerapp:
+    extends:
+      file: common.yml
+      service: dockerapp
     build: .
-    ports:
-      - "5000:5000"
     depends_on:
       - redis
   redis:
-    image: redis:3.2.0
+    extends:
+      file: common.yml
+      service: redis
diff --git a/prod.yml b/prod.yml
index b0096ff1..b3b9532f 100644
--- a/prod.yml
+++ b/prod.yml
@@ -1,9 +1,13 @@
 version: '2'
 services:
   dockerapp:
+    extends:
+      file: common.yml
+      service: dockerapp
     image: jleetutorial/dockerapp
-    ports:
-      - "5000:5000"
-
+    depends_on:
+      - redis
   redis:
-    image: redis:3.2.0
+    extends:
+      file: common.yml
+      service: redis