Docker is not saving django media files into project 'media' directory on production - reactjs

Question

App Description
I have an app with django-gunicorn for back-end and reactjs-nginx with front-end all containerized as well as hosted on aws ec2 instance.
Problem
On development environment, media files are being saved in the 'media' directory permanently. Tho, those files are only saved on the current running docker container on production time. As a result, the files will be removed when I rebuild/stopped the container for a new code push.
Expectation
I wanted to store the file on the 'media' folder for permanent use.
Important code
settings.py
ENV_PATH = Path(__file__).resolve().parent.parent
STATIC_ROOT = BASE_DIR / 'django_static'
STATIC_URL = '/django_static/'
MEDIA_ROOT = BASE_DIR / 'media/'
MEDIA_URL = '/media/'
docker-compose-production.yml
version: "3.3"
services:
db:
image: postgres
restart: always #Prevent postgres from stopping the container
volumes:
- ./data/db:/var/lib/postgresql/data
environment:
- POSTGRES_DB=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
ports:
- 5432:5432
nginx:
restart: unless-stopped
build:
context: .
dockerfile: ./docker/nginx/Dockerfile
ports:
- 80:80
- 443:443
volumes:
- static_volume:/code/backend/server/django_static
- ./docker/nginx/production:/etc/nginx/conf.d
- ./docker/nginx/certbot/conf:/etc/letsencrypt
- ./docker/nginx/certbot/www:/var/www/certbot
depends_on:
- backend
# Volume for certificate renewal
certbot:
image: certbot/certbot
restart: unless-stopped
volumes:
- ./docker/nginx/certbot/conf:/etc/letsencrypt
- ./docker/nginx/certbot/www:/var/www/certbot
entrypoint: "/bin/sh -c 'trap exit TERM; while :; do certbot renew; sleep 12h & wait $${!}; done;'"
backend:
restart: unless-stopped
build:
context: .
dockerfile: ./docker/backend/Dockerfile
entrypoint: /code/docker/backend/wsgi-entrypoint.sh
volumes:
- .:/code
- static_volume:/code/backend/server/django_static
expose:
- 8000
depends_on:
- db
volumes:
static_volume: { }
pgdata: { }

Answer 1

I finally figured out the issue. I forgot to add .:/code to my nginx volumes config in my docker-compose file. Thank to this answer
Updated nginx volumes confi
volumes:
- .:/code
- static_volume:/code/backend/server/django_static
- ./docker/nginx/production:/etc/nginx/conf.d
- ./docker/nginx/certbot/conf:/etc/letsencrypt
- ./docker/nginx/certbot/www:/var/www/certbot