How to setup nginx for docker registry?

Question

Nginx

I am setting up a private server to store docker images.
I'm using Ubuntu 18.04 as my OS.
I ran into a problem in the interaction between the nginx container and the registry container.
Very slow performance when performing a push image. The problem looks like this.

$ docker push 192.168.3.131:6080/my-ubuntu

The push refers to a repository [192.168.3.131:6080/my-ubuntu]
2de391e51d73: Retrying in 14 seconds
d73dd9e65295: Retrying in 14 seconds
686245e78935: Retrying in 14 seconds
d7ff1dc646ba: Retrying in 14 seconds
644879075e24: Retrying in 14 seconds

The process is progressing, but very slowly. Will send 100 Kb and wait for 15 seconds. And then again like this.
Here is my docker-compose.yml to run

version: '3'

services:
  registry:
    container_name: registry
    restart: always
    image: registry:2
    volumes:
      - /srv/docker-registry/data:/var/lib/registry

  nginx:
    container_name: nginx
    image: nginx
    restart: always
    links:
       - registry
    volumes:
       - "./nginx.conf:/etc/nginx/conf.d"
    ports:
       - "80:80"

networks:
  default:
    external:
      name: nginx-proxy

And here is the nginx config

map $upstream_http_docker_distribution_api_version $docker_distribution_api_version {
    '' 'registry/2.0';
}

upstream docker-registry {
   server registry:5000;
}

server {
    listen       80;
    server_name  "";

    proxy_send_timeout 120;
    proxy_buffering    off;
    tcp_nodelay        on;

    access_log off;

    # disable any limits to avoid HTTP 413 for large image uploads
    client_max_body_size 0;

    # required to avoid HTTP 411: see Issue #1486 (https://github.com/moby/moby/issues/1486)
    chunked_transfer_encoding on;

    location /v2/ {
        # Do not allow connections from docker 1.5 and earlier
        # docker pre-1.6.0 did not properly set the user agent on ping, catch "Go *" user agents
        if ($http_user_agent ~ "^(docker\/1\.(3|4|5(?!\.[0-9]-dev))|Go ).*$" ) {
            return 404;
        }

        # To add basic authentication to v2 use auth_basic setting.
        auth_basic "Registry realm";
        auth_basic_user_file /etc/nginx/conf.d/nginx.htpasswd;

        ## If $docker_distribution_api_version is empty, the header is not added.
        ## See the map directive above where this variable is defined.
        # add_header 'Docker-Distribution-Api-Version' $docker_distribution_api_version always;

        proxy_pass                          http://docker-registry;
        proxy_set_header  Host              $http_host;   # required for docker client's sake
        proxy_set_header  X-Real-IP         $remote_addr; # pass on real client's IP
        proxy_set_header  X-Forwarded-For   $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto  $scheme;
        proxy_set_header X-Forwarded-Host   $host:$server_port;
        proxy_set_header X-Original-URI     $request_uri;
        proxy_set_header Docker-Distribution-Api-Version registry/2.0;
        proxy_read_timeout                  900;
    }
}

If you open a port from the registry container, then push works well.
I assume that the problem is in my settings in nginx, but maybe not.
Just haven't tried it yet.
In order to take a deeper look, I raised the project.
https://bitbucket.org/mrvstas/registry-docker
Can anyone come across something similar? What to watch?

Answer 1

I did not come across anything like this, I did everything according to the instructions and everything works well.
Two notes: