A small number of students are hitting an edge case where the nginx upstream connection is failing after they run docker-compose up --build:

connect() failed (111: Connection refused) while connecting to upstream, client:[DOCKER INTERNAL IP], server:, request: "GET / HTTP/1.1", upstream: [NETWORK IP]

The solution they found was to add this to their nginx service in the docker-compose.yml file:

  nginx:
    depends_on:
      - api
      - client