diff --git a/README.md b/README.md
new file mode 100644
index 00000000..c459f5c3
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# dockerapp
+Project source code for https://www.udemy.com/docker-tutorial-for-devops-run-docker-containers
diff --git a/circle.yml b/circle.yml
index 700c79f9..48b687b6 100644
--- a/circle.yml
+++ b/circle.yml
@@ -6,6 +6,7 @@ machine:
 
 dependencies:
   pre:
+    - sudo pip install --upgrade pip
     - sudo pip install docker-compose
 
 test:
@@ -15,7 +16,7 @@ test:
 
 deployment:
   hub:
-    branch: /.*/
+    branch:  [circle_ci_publish, master] 
     commands:
       - docker login -e $DOCKER_HUB_EMAIL -u $DOCKER_HUB_USER_ID -p $DOCKER_HUB_PWD
       - docker tag dockerapp_dockerapp $DOCKER_HUB_USER_ID/dockerapp:$CIRCLE_SHA1
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 2c57eda6..8b6b1188 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,9 +1,12 @@
 version: '2'
 services:
   dockerapp:
+    extends:
+      file: common.yml
+      service: dockerapp
     build: .
-    ports:
-      - "5000:5000"
 
   redis:
-    image: redis:3.2.0
+    extends:
+      file: common.yml
+      service: redis
diff --git a/prod.yml b/prod.yml
index b0096ff1..7e54684e 100644
--- a/prod.yml
+++ b/prod.yml
@@ -1,9 +1,24 @@
 version: '2'
 services:
   dockerapp:
+    extends:
+      file: common.yml
+      service: dockerapp
     image: jleetutorial/dockerapp
-    ports:
-      - "5000:5000"
+    environment:
+      - constraint:node==master
+    depends_on:
+      - redis
+    networks:
+      - mynet
 
   redis:
-    image: redis:3.2.0
+    extends:
+      file: common.yml
+      service: redis
+    networks:
+      - mynet
+
+networks:
+  mynet:
+    driver: overlay