Nexus3 OSS Repository Manager reverse proxy through Nginx with SSL

nexus3.nginx.conf

ssl_certificate                 /etc/nginx/ssl/nexus.domain.tld/cert.pem;
ssl_certificate_key             /etc/nginx/ssl/nexus.domain.tld/privkey.pem;

upstream nexus {
    server                      127.0.0.1:8081       fail_timeout=0;
}

server {
    listen                      80;
    server_name                 nexus.domain.tld;
    return 301                  https://$host$request_uri;
}

server {
    listen                      443                  ssl;    
    server_name                 nexus.domain.tld;
    
    # allow large uploads of files
    client_max_body_size        1G;
    
    # optimize downloading files larger than 1G
    #proxy_max_temp_file_size   2G;
    
    proxy_send_timeout          120;
    proxy_read_timeout          300;
    proxy_buffering             off;
    keepalive_timeout           5 5;
    tcp_nodelay                 on;
    
    location / {
        proxy_set_header        Host $host:$server_port;
        proxy_set_header        X-Real-IP            $remote_addr;
        proxy_set_header        X-Forwarded-For      $proxy_add_x_forwarded_for;
        proxy_set_header        X-Forwarded-Proto    $scheme;
        proxy_redirect          http://              https://;
        proxy_pass              http://nexus;
        
        # Required for new HTTP-based CLI
        proxy_http_version      1.1;
        proxy_request_buffering off;
        proxy_buffering         off;
    }
}