Как правильно настроить сайт на express.js на docker с nginx?

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FROM node:10
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "start"]

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worker_processes 1;
user nginx;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://example.com:3000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
}

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version: '3'
services:
app:
build: .
container_name: myapp
ports:
- "3000:3000"
nginx:
image: nginx:latest
container_name: mynginx
ports:
- "80:80"
volumes:
- ./nginx.conf:/etc/nginx/nginx.conf
depends_on:
- app

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docker-compose up --build