Dockerized Nginx, Domain not working properly - django

Question

I managed to dockerized my django app. With docker-compose I can run django,postgresql and nginx but Nginx not working well. I can access my app and it works fine but when I tried to connect to my domain, always work at port 8000. I want to run my app at testapp.org but I can only access wtih testapp.org. How can I solve this? What changed do I need to use in my configuration file? Did I missed something?
docker-compose:
version: '3'
services:
db:
container_name: db.postgres
image: postgres:10
environment:
- POSTGRES_DB=testdb
- POSTGRES_USER=test
- POSTGRES_PASSWORD=password
ports:
- '5432:5432'
volumes:
- ./pgdata:/var/lib/postgresql/data
web:
restart: always
build: .
image: djangoapp
command: bash -c "python manage.py makemigrations && python manage.py migrate && gunicorn fatihkocnet.wsgi -b 0.0.0.0:8000"
depends_on:
- db
volumes:
- ./fatihkocnet:/fatihkocnet
- ./config/nginx:/etc/nginx/conf.d
expose:
- "8000"
nginx:
restart: always
image: nginx:latest
ports:
- "8000:8000"
volumes:
- ./fatihkocnet:/fatihkocnet
- ./config/nginx:/etc/nginx/conf.d
depends_on:
- web
nginx/test.conf
upstream web {
ip_hash;
server web:8000;
}
# portal
server {
location / {
proxy_pass http://web;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_redirect off;
}
listen 8000;
server_name testapp.org;
}

Answer 1

You need to map Docker Hosts port (80 if you want to host service on HTTP port) to your ngnix docker service.
e.g.
ports:
- "80:8000"
You need to map your HOST servers IP into DNS to your testapp.org address.