The setup method is made for unix system.
Make sure you have created your project on GCP and installed the cloud SDK (Google cloud integration for terminal). See more information here: https://cloud.google.com/sdk/
Make sure you are authenticated and set up your SDK with the project you want to deploy to.
gcloud app deploy app.yaml backend/app.yaml
Make sure you have yarn installed.
yarn install
yarn serve
Make sure you have python 3.7 and pip > 19.0 installed.
python3 -m venv /path/to/virtual-env
source /path/to/virtual-env/bin/activate
cd backend
pip install -r requirements.txt
python main.py