docker-nginx-templating-defaults-poc

default.conf.template

server {
    listen       ${NGINX_PORT};
    server_name  simple-reverse-proxy;

    location / {
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass ${NGINX_REMOTE_URL};
    }
}

docker-compose.yml

version: '3'
services:
  website-proxy-default:
    build: .
    environment:
      - NGINX_REMOTE_URL=http://website/
    ports:
      - 90:80
    restart: unless-stopped
    networks:
      - default
    
  website-proxy-port-91:
    build: .
    environment:
      - NGINX_REMOTE_URL=http://website/
      - NGINX_PORT=91
    ports:
      - 91:91
    restart: unless-stopped
    networks:
      - default

  website:
    image: nginx:1-alpine
    volumes:
      - ./index.html:/usr/share/nginx/html/index.html:ro
    restart: unless-stopped
    networks:
      - default

Dockerfile

FROM nginx:1-alpine

COPY default.conf.template /etc/nginx/templates/
ENV NGINX_PORT=80

index.html

<h1>PoC works!</h1>