Update the node-gyp alpine docs section to account for Node 18 in Alpine 3.20 python issue

Author: LaurentGoderre

docs/BestPractices.md

@@ -187,7 +187,7 @@ Here is an example of how you would install dependencies for packages that requi
 ```Dockerfile
 FROM node:alpine
 
-RUN apk add --no-cache --virtual .gyp python3 make g++ \
+RUN apk add --no-cache --virtual .gyp python3 py-setuptools make g++ \
     && npm install [ your npm dependencies here ] \
     && apk del .gyp
 ```