How to setup nginx to site to a Django app over https? - django

Question

I have an application that I am running with multiple docker containers with a docker-compose file. Two main containers are django_container and nginx_container.
I want to force using https for my application but unfortunately, my Nginx config doesn't seem to work. Basically, my gunicorn server seems to be running OK.
I can see the http://django:8001 from inside the nginx_container, but I can't see http://example.com from inside it or outside.
Here is the content of my Nginx config
server {
listen 80;
server_name example.com;
rewrite ^ https://example.com$request_uri? permanent;
}
server {
listen 443 ssl;
server_name example.com;
ssl_certificate /etc/nginx/certs/example_com.crt;
ssl_certificate_key /etc/nginx/certs/cert.key;
access_log /log/nginx.access.log main;
location / {
proxy_pass http://django:8001;
proxy_set_header X-Forwarded-Proto $scheme;
}
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
To create the containers I use the following docker-compose.yml file, which read the values from the corresponding .env file
version: "3.9"
services:
postgres:
image: postgres:13.0
container_name: postgres_container
restart: always
ports:
- "5432:5432"
volumes:
- $P_VOLUME:/initdb.d/
environment:
P_USER: $P_USER
P_PASSWORD: $P_PASSWORD
P_DB: $P_DB
django:
build:
context: .
dockerfile: ./Dockerfile
container_name: django_container
depends_on:
- postgres
ports:
- "8001:8001"
volumes:
- $ROOT_DIR:/code/
environment:
SECRET_KEY: $SECRET_KEY
ROOT_DIR: $ROOT_DIR
nginx:
image: nginx
container_name: nginx_container
depends_on:
- django
ports:
- "80:80"
- "443:443"
environment:
NGINX_HOST: $NGINX_HOST
NGINX_PORT: 80
volumes:
- $ROOT_DIR/config/$NGINX_CONF:/etc/nginx/conf.d/default.conf
- $ROOT_DIR/log/:/log/
- $ROOT_DIR/certs/:/etc/nginx/certs/
I checked the .env file and it seems the paths and configs are correct.
What am I missing here? Thanks a ton!