.env settings
DATAURL=<solar-url>
DATAENDPOINT=<solar-get-endpoint>
DATAREFRESH=<refresh-in-seconds>
PORT=<port>
HOST=<hostname>
WEATHERAPI=<open-weather-api>
WEATHERENDPOINT=<weather-get-endpoint>
WEATHERLOCATION=<weather-location>
WEATHERREFRESH=<refresh-in-seconds>
FIREBASEAPIKEY=<firebase-account-key-info>
FIREBASEAUTHDOMAIN=<firebase-account-key-info>
FIREBASEDATABASEURL=<firebase-account-key-info>
FIREBASEPROJECTID=<firebase-account-key-info>
FIREBASESTORAGEBUCKET=<firebase-account-key-info>
FIREBASEMSGSENDERID=<firebase-account-key-info>
FIREBASESIGNINEMAIL=<firebase-signin-auth-email>
FIREBASESIGNINPASSWORD=<firebase-signin-auth-password>
SCHEDULE=<cron-schedule>