Configure Regions for Starter Apps

CONTENTSTACK_CDN = https://eu-cdn.contentstack.com/v3 
#Compulsory param for EU users. NA users need not add this param.
CONTENTSTACK_APP_HOST = app.contentstack.com 
#CONTENTSTACK_APP_HOST- For NA/US region, set “CONTENTSTACK_APP_HOST= app.contentstack.com”. For the EU region, change it to “CONTENTSTACK_APP_HOST= eu-app.contentstack.com”.
CONTENTSTACK_API_HOST = api.contentstack.io 
#CONTENTSTACK_API_HOST- For NA/US region, set "CONTENTSTACK_API_HOST = api.contentstack.io". For the EU region, change it to "CONTENTSTACK_API_HOST = eu-api.contentstack.com".