Nginx configuration file

default.conf

server {
        listen 80;
        listen [::]:80;
        server_name api.ewixi.com;

        location ~ /.well-known/acme-challenge {
          allow all;
          root /var/www/html;
        }

        location / {
                rewrite ^ https://$host$request_uri? permanent;
        }
}

server {
        listen 443 ssl http2 default_server;
        listen [::]:443 ssl http2;
        server_name api.ewixi.com;

        server_tokens off;

        ssl_certificate /etc/letsencrypt/live/api.ewixi.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/api.ewixi.com/privkey.pem;

        ssl_buffer_size 8k;

        ssl_dhparam /etc/ssl/certs/dhparam-2048.pem;

        ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
        ssl_prefer_server_ciphers on;

        ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5;

        ssl_ecdh_curve secp384r1;
        ssl_session_tickets off;

        ssl_stapling on;
        ssl_stapling_verify on;
        resolver 8.8.8.8;

        location / {
                proxy_pass http://app:4000;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "upgrade";
		proxy_set_header Host $http_host;
		proxy_set_header X-Real-IP $remote_addr;

                add_header X-Frame-Options "SAMEORIGIN" always;
                add_header X-XSS-Protection "1; mode=block" always;
                add_header X-Content-Type-Options "nosniff" always;
                add_header Referrer-Policy "no-referrer-when-downgrade" always;
                add_header Content-Security-Policy "default-src * data: 'unsafe-eval' 'unsafe-inline'" always;
        }

        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;
}