fix: vulnerabilities

Author: lauthieb

CONTRIBUTING.md

@@ -11,9 +11,11 @@ Please note we have a code of conduct, please follow it in all your interactions
    build.
 2. Update the README.md with details of changes to the interface, this includes new environment 
    variables, exposed ports, useful file locations and container parameters.
-3. Increase the version numbers in any examples files and the README.md to the new version that this
+3. Ensure `npm run build` produces a fully functioning app.
+4. Ensure `npm run dev` runs the app with development tools.
+5. Increase the version numbers in any examples files and the README.md to the new version that this
    Pull Request would represent. The versioning scheme we use is [SemVer](http://semver.org/).
-4. You may merge the Pull Request in once you have the sign-off of two other developers, or if you 
+6. You may merge the Pull Request in once you have the sign-off of two other developers, or if you 
    do not have permission to do that, you may request the second reviewer to merge it for you.
 
 **Working on your first Pull Request?** You can learn how from this *free* series [How to Contribute to an Open Source Project on GitHub](https://egghead.io/series/how-to-contribute-to-an-open-source-project-on-github)