docs: Add note in docs about npmrc

DOCUMENTATION/content/documentation/index.md

@@ -1887,6 +1887,7 @@ To install NVM and NodeJS in the Workspace container
 
 3 - Re-build the container `docker-compose build workspace`
 
+A `.npmrc` file is included in the `workspace` folder if you need to utilise this globally. This is copied automatically into the root and laradock user's folders on build.
 
 
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