Test env variable:
console.log(process.env.REACT_APP_TEST_KEY);

PUBLIC_URL=http://127.0.0.1/play-nine

Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy Unrestricted



https://medium.com/@svinkle/how-to-deploy-a-react-app-to-a-subdirectory-f694d46427c1
https://stackoverflow.com/questions/49429906/how-should-i-configure-create-react-app-to-serve-app-from-subdirectory
https://skryvets.com/blog/2018/09/20/an-elegant-solution-of-deploying-react-app-into-a-subdirectory/


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Docker commands:
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docker image build -t "play-nine:1.0.0" .
docker run -p 5050:80 -it play-nine:1.0.0

docker push cloud.canister.io:5000/tstanciu/play-nine:1.0.0
docker pull cloud.canister.io:5000/tstanciu/play-nine:1.0.0

---------------------
Registry: cloud.canister.io:5000/tstanciu
User: tstanciu
Key for readonly operations: ***REMOVED***

docker login --username=deploy+tstanciu --password=***REMOVED*** cloud.canister.io:5000
docker login --username=yourcanisterID --password=yourpassword cloud.canister.io:5000