Break apart services, move to docker compose

[lullis]

This commit makes the following changes:

• removes nginx from the base docker image
• Replaces uwsgi with uvicorn server as the django application server
• Adds docker service to run nginx with a configuration that can connect with the django application container
• Adds docker service to run django commands needed at start (migrate and collectstatic)
• Adds docker service to run "send_batches"

I'm marking this as a draft PR because there is still some work needed on deploy.sh to reflect those changes for proper deployment.