include resource for Dockerfile Format

Author: lykelly19

articles/machine-learning/how-to-troubleshoot-environments.md

@@ -1213,6 +1213,9 @@ This issue can happen when your Dockerfile is formatted incorrectly.
 **Troubleshooting steps**
 * Ensure Dockerfile is formatted correctly and is encoded in UTF-8
 
+**ResourcesS**
+* [Dockerfile format](https://docs.docker.com/engine/reference/builder/#format)
+
 ## *Docker pull issues*
 ### Failed to pull Docker image
 <!--issueDescription-->