In case anyone else is trying to do this, I found the issue. After running docker-compose up, you need to get into the nginx container (run docker ps to obtain the container name). After you’re in the container open /etc/nginx/conf.d/default.conf And edited this line proxy_pass http://your.domain.com:8080
Again if you’re new to docker, after you get the container name, run the following to get into the container:
docker exec -it container-name_1 bash