Configure Nginx with non SSL and SSL as a Reverse Proxy for Local Application Server

ssl_proxy.conf

server {
       listen 80;
       
       server_name dev.localhost;
       
       client_max_body_size 300m;
       
       proxy_set_header Host $http_host;

       location / {
                proxy_pass http://localhost:3000;
       }
}

server {
       listen 443;

       server_name dev.localhost;
       
       client_max_body_size 300m;

       ssl on;
       ssl_certificate /usr/local/etc/nginx/cert.crt;
       ssl_certificate_key /usr/local/etc/nginx/cert.key;

       proxy_set_header Host $http_host;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header X-Forwarded-Proto $scheme;

       location / {
                proxy_pass http://localhost:3000;
       }

}

generate a certificate

sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/nginx/cert.key -out /etc/nginx/cert.crt