HAProxy + Nginx + PHP with client IP attached (don't forget docker daemon option `--userland-proxy=false`)

docker-compose.yml

version: '2'
services:
    haproxy:
        image: haproxy:alpine
        volumes:
            - ./haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg
        ports:
            - "80:80"
        depends_on:
            - nginx
            - syslog
    nginx:
        image: nginx:alpine
        volumes:
            - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
            - ./:/usr/share/nginx/html:ro
        depends_on:
            - php
    php:
        image: php:fpm-alpine
        volumes:
            - ./:/usr/share/nginx/html:ro
    syslog:
        image: bobrik/syslog-ng:latest
        volumes:
            - ./log:/var/log/syslog-ng
networks:
    default:
        ipam:
            config:
                - subnet: 10.2.0.0/24
                  ip_range: 10.2.0.0/25

haproxy.cfg

global
    log syslog daemon

defaults
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms

resolvers docker_dns
  nameserver dns "127.0.0.11:53"
  timeout retry   1s
  hold valid 1s

listen http-in
    mode http
    bind :80
    option httplog
    option forwardfor except 127.0.0.1
    log global
    server nginx nginx:80 check resolvers docker_dns resolve-prefer ipv4

index.php

<?php phpinfo(); ?>

nginx.conf

server {
    listen 80;

    server_name _;

    charset utf-8;

    root   /usr/share/nginx/html;
    index  index.php index.html index.htm;

    gzip on;
    gzip_disable "msie6";
    gzip_types text/plain text/css text/xml text/javascript application/json
        application/x-javascript application/xml application/xml+rss application/javascript;

    error_page 404 = /index.php;

    access_log /dev/stdout;
    error_log /var/log/nginx/error.log debug;

    client_max_body_size 64m;

    location / {
        try_files $uri $uri/ /index.php?$args;
    }

    location /. {
        return 404;
    }

    location ~ \.php$ {
         include fastcgi_params;
         try_files $uri =404;
         resolver 127.0.0.11;

         set_real_ip_from 10.2.0.0/24;
         real_ip_header X-Forwarded-For;

         set $php "php";
         fastcgi_pass $php:9000;

         fastcgi_split_path_info ^(.+\.php)(/.+)$;
         fastcgi_read_timeout 300;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_index index.php;
    }

    location ~ /\.ht {
        deny  all;
    }
}