[Python] Cannot connect to Mongo Atlas from Flask App inside Docker with Nginx

I am failing to get my App to connect the Atlas DB from behind nginx inside Docker.

Here is my docker-compose.yml after trying to set up haproxy and failing to get through. Everything works when no behind SSL, have tried using IP addresses but cannot get through. IP address is whitelisted. Works fine in dev. just not when in prod and cannot figure out what I can do.

I would not have used Atlas if I knew it was this much trouble to connect.

services:
nginx:
image: nginx:latest
volumes:
- ./nginx/conf.d:/etc/nginx/conf.d
- ./nginx/certbot/conf:/etc/letsencrypt
- ./nginx/certbot/www:/var/www/certbot
- ./static:/var/www/static
ports:
- "80:80"
- "443:443"
depends_on:
- app
networks:
- qdosnet
restart: on-failure

app:
image: uvuume/qdosprmanager-app:latest
container_name: qdosmanager
expose:
- 5000
volumes:
- ./static/images:/var/www/static/images
- ./resolv.docker.conf:/etc/resolv.conf:ro
environment:
PYTHONUNBUFFERED: 1
env_file: env.prod
command: gunicorn --timeout 120 -b 0.0.0.0:5000 app.app:app
networks:
- qdosnet

haproxy:
image: haproxy:latest
volumes:
- ./etc/haproxy/haproxy.cfg/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
- ./resolv.docker.conf:/etc/resolv.conf:ro
ports:
- "27018:27018"
networks:
- qdosnet
restart: always


networks:
qdosnet:
driver: bridge


Any advice on what I can do?

Have not tried to set network to Host as that exposes network.

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