# dkregistry.xai-corp.net
## Set a variable to help us decide if we need to add the
## 'Docker-Distribution-Api-Version' header.
## The registry always sets this header.
## In the case of nginx performing auth, the header will be unset
## since nginx is auth-ing before proxying.
map $upstream_http_docker_distribution_api_version $docker_distribution_api_version {
'' 'registry/2.0';
}

server {
    listen  443 ssl;
    server_name dkregistry.xai-corp.net;
    ssl_certificate     /etc/letsencrypt/live/xai-corp.net/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/xai-corp.net/privkey.pem;

    # Recommendations from https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
    ssl_protocols TLSv1.1 TLSv1.2;
    ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;

    #Strict-Transport-Security: max-age=15768000
    add_header Strict-Transport-Security "max-age=600; includeSubDomains" always;

    # 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 /opt/shared/dkregistry/auth/htpasswd;

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

        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 Connection $http_connection;

        proxy_pass http://dkhost.xai-corp.net:5000;
        proxy_read_timeout                  900;
    }

}
