server {
    listen              443 ssl;
    server_name         localhost;

    ssl_password_file   /etc/ssl/certs/pass;
    ssl_certificate     /etc/ssl/certs/server.crt;
    ssl_certificate_key /etc/ssl/certs/server.key;

    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_set_header    X-Forwarded-Host   $host;
        proxy_set_header    X-Forwarded-Server $host;
        proxy_set_header    X-Forwarded-Port   $server_port;
        proxy_set_header    X-Forwarded-Proto  $scheme;
        proxy_set_header    SSL_CLIENT_CERT    $ssl_client_cert;
        proxy_pass https://keycloak:8443/realms/master/protocol/openid-connect/token;
    }
}