Integrate with stripe dev environment

[kraktus]

To allow easy patron-related testing.

[fitztrev]

Hey, I like this idea. And it would be helpful for some of my recent changes to lila.

I tried setting up https://github.com/stripe/stripe-mock and while it kind of works, it's not able to do a full end-to-end checkout flow. I can click "Credit Card" on the checkout form and it makes the request to the mock Stripe server to create the customer, but the Stripe-hosted checkout page gives an error because the customer doesn't really exist. But when you go back, lila thinks it went through so you're given the Patron account details page.

Were you thinking of another approach?

[NateBrady23]

I've used the stripe-cli image to complete this successfully on other projects. Here's an example of what it looked like in my docker-compose.yml. This worked really well for my checkout session use cases.

  stripe-cli:
    image: stripe/stripe-cli:v1.8.8
    environment:
      STRIPE_API_KEY: sk_test_51Kmredacted
      STRIPE_DEVICE_NAME: local-dev-cli
    command: listen --forward-to hostname-of-api:3000/stripe/checkout-session-callback
    networks:
      - app-network