Flask app on GKE

Base: gcp-app-engine-flask

Launch locally

Start
```
docker-compose up
```
Go to localhost:8080

Setup your GCP project

Create a new project on GCP
Activate a Billing account
Activate the following APIs:
- Cloud Deployment Manager V2 API
- Kubernetes Engine API
- Compute Engine API
- Artifact Registry API

Setup GKE + Docker registry

Option 1: Gcloud
Option 2: Terraform