Update README.md

README.md

@@ -142,15 +142,20 @@ get SQLite tests for free :)
 #### 3a. Docker
 If you don't feel like setting up databases and users, you can use our [docker](http://docker.io) [image](https://index.docker.io/u/mhansen/sequelize-contribution/) for sequelize contribution.
 
-Running:
-```
-sudo docker pull mhansen/sequelize-contribution && \
-CONTAINER=$(sudo docker run -d -i -t mhansen/sequelize-contribution) && \
-CONTAINER_IP=$(sudo docker inspect -format='{{.NetworkSettings.IPAddress}}' $CONTAINER) && \
-SEQ_HOST=$CONTAINER_IP SEQ_USER=sequelize_test make all && \
-sudo docker stop $CONTAINER
-```
-Will run the docker image, run all tests and stop the container again.
+1. Getting the image:
+    sudo docker pull mhansen/sequelize-contribution`
+
+2. Start the container and save references to container id and ip:
+    CONTAINER=$(sudo docker run -d -i -t mhansen/sequelize-contribution)
+    CONTAINER_IP=$(sudo docker inspect -format='{{.NetworkSettings.IPAddress}}' $CONTAINER)
+
+3. Run tests:
+    SEQ_HOST=$CONTAINER_IP SEQ_USER=sequelize_test make all
+
+4. Stop the container:
+    sudo docker stop $container
+
+When running tests repeatedly, you only need to redo step 3 if you haven't stopped the container.
 
 ### 4. Run the tests ###