Set up AI model service

Set your model configs into the environment variables. You may refer to choose a model for more details.

# replace with your own
export OPENAI_API_KEY="sk-abcdefghijklmnopqrstuvwxyz"

# You may need more configs, such as model name and endpoint, please refer to [choose a model](../choose-a-model)
export OPENAI_BASE_URL="..."