Network frontend and API docker containers for end to end local containerized environment

[doug-s-nava]

Summary

Currently the docker networks used by the frontend docker compose and the API / backend docker compose have no way of communicating with each other. As a result the parts of the frontend that need to connect to the API (search and opportunities) were failing.

We should create a way for the frontend and API containers to talk to each other.

Acceptance criteria

When running the frontend and API in docker containers:

• the frontend container is able to make requests to the API
• search functionality works from the UI
• opportunity detail functionality works from the UI