See and copy .env.sample to .env
$ cp .env.sample .env
After setting environment variables
$ source .env
$ echo $OPENAI_API_KEY
xxxxxxx
Run server
$ pip install -r requirements.txt
$ uvicorn main:app --reload
Run server
$ pip install -r requirements.txt
$ uvicorn main:app --reload
If you use ngrok as dev mode,
$ ngrok http 8000
# uvicorn main:app --port 80 --host 0.0.0.0