dhis2 application development steps

https://www.fiftythreetwenty.com/learn/dhis2/app-development-guides/

https://ui.dhis2.nu

https://ui.dhis2.nu/demo

https://developers.dhis2.org/docs/guides/spin-up-local-instance/

https://github.com/dhis2/academy-web-app-dev-2020

https://developers.dhis2.org/guides/dhis2-docker

https://developers.dhis2.org/guides/quickstart-app-development

https://runtime.dhis2.nu/#/hooks/useDataQuery

https://github.com/EyeSeeTea/Bulk-Load

npm install --global yarn

yarn global add @dhis2/cli
 OR
npm install --global @dhis2/cli

d2 app scripts init <app-name>
Create a folder (dhis2_apps) and get into it and run the following command.
d2 app scripts init hellod2worldapp1

cd hellod2worldapp1
yarn start

for existing app, go to the folder and run
yarn install

http://localhost:3001
http://localhost:8085/dhis-web-settings/index.html#/access
 
CORS whitelist
http://*
 
Host: http://localhost:8085
User: admin
Pass: district
 
yarn build
Find the app here
D:\xampp7227\htdocs\dhis2_apps\MyD2App1\build\bundle\hellod2worldapp1.zip