git clone https://github.com/cygkichi/minimum_flask_d3
cd minimum_flask_d3
virtualenv --python python3 ~/envs/minimum_flask_d3
source ~/envs/minimum_flask_d3/bin/activate
pip install -r requirements.txt

python main.py #Press Ctrl+C to quit

gcloud app create
gcloud app deploy app.yaml --project [your project name]