Updae hadoop lab 1 README

Author: coderigo

docker-examples/hadoop/hadoop-01/README.md

@@ -16,11 +16,15 @@ The above command will start a container and start hadoop within it. Once set up
 
 Once finished, you can simply type `exit` to exit the container and stop and remove the container with `docker stop hadoop-01 && docker rm hadoop-01`
 
-## If the above commands have already been executed and hadoop-01 setup then
- docker start hadoop-01
- docker attach hadoop-01
-is sufficient
- 
+## Reruns 
+
+If the above commands have already been executed and hadoop-02 setup then the below is sufficient:
+
+```bash
+docker start hadoop-01
+docker attach hadoop-01
+```
+
 ## Running the lab examples
 
 Inside the container, you can run the lab commands by running the shell script in `/tmp/from-container-host/lab_commands.sh`. Alternatively, you can play around and do it yourself, remembering that HDFS is installed in `/usr/local/hadoop/bin/hdfs`.