nginx setup for multiple docker-compose containers (react.js app, node.js server)

default.conf

# nginx configuration for docker-compose containers running locally

server {
  listen 80;
  listen [::]:80;

  #Docker DNS
  resolver 127.0.0.11;

  server_name localhost;
  access_log /var/log/nginx/appstore.access.log;
  error_log /var/log/nginx/appstore.error.log;

  location / {
    root   /usr/share/nginx/html;
    index  index.html index.htm;
    try_files $uri $uri/ /index.html;
  }

  location /api {
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header X-Forwarded-Proto $scheme;

      #hack to prevent nginx to resolve container's host on start up
      set $docker_host "appstore-bl-server";
      proxy_pass http://$docker_host:3000;
  }

  error_page   500 502 503 504  /50x.html;
  location = /50x.html {
    root   /usr/share/nginx/html;
  }
}

docker-compose-prod1.yml

# docker-compose for react.js, nginx Dockerfile 
# before the docker-compose is run new docker network must be created:
# docker network create --driver bridge appstore-net

version: '3.5'

services:
  appstore-front:
    container_name: appstore-front-production
    build:
      context: .
      dockerfile: Dockerfile-prod1
    ports:
      - '80:80'
    networks:
      - appstore-net
    external_links:
      - appstore-bl-server-production

networks:
  appstore-net:
    external: true  

docker-compose-prod2.yml

# docker-compose for node.js server
# before the docker-compose is run new docker network must be created:
# docker network create --driver bridge appstore-net

version: '3'
services:
  appstore-bl-server:
    container_name: appstore-bl-server-production
    build:
      dockerfile: Dockerfile-prod2
      context: .
    volumes:
      - ".:/usr/src/app"
    ports:
      - "3000:3000"
    networks:
      - appstore-net

networks:
  appstore-net:
    external: true

Dockerfile-prod1

# Dockerfile for react.js app and nginx
# build environment
FROM node:8-alpine as builder
WORKDIR /usr/src/app
ENV PATH /usr/src/app/node_modules/.bin:$PATH
COPY package.json /usr/src/app/package.json
RUN npm install
COPY . /usr/src/app
RUN npm run build --loglevel verbose

# production environment
FROM nginx:1.13.9-alpine
RUN rm -rf /etc/nginx/conf.d
COPY conf /etc/nginx
COPY --from=builder /usr/src/app/build /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]"-g", "daemon off;"]

Dockerfile-prod2

# Dockerfile for node.js server

FROM node:8-alpine

# Create app directory
WORKDIR /usr/src/app

# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm@5+)
COPY package*.json ./

RUN npm install --only=production

# Bundle app source
COPY . .

EXPOSE 3000

CMD [ "npm", "start" ]