replace ngrok with nginx/ssh.

build.sh

ln -s /etc/nginx/sites-available/dev /etc/nginx/sites-enabled/

# Install Certbot (letsencrypt)
echo 'deb http://deb.debian.org/debian stretch-backports main' >> 
/etc/apt/sources.list
gpg --keyserver pgp.mit.edu --recv-keys 7638D0442B90D010 
8B48AD6246925553
gpg --armor --export 7638D0442B90D010 | apt-key add -
gpg --armor --export 8B48AD6246925553 | apt-key add -
apt update
apt install certbot python-certbot-nginx -t stretch-backports


# Then locally I start an ssh tunnel to the server
# Locally on your computer
ssh -N -R 4040:localhost:8000 [email protected]
  

ngrok-like-nginx.conf

# On your server in the cloud
# Setup Firewall
ufw allow ssh/tcp
ufw allow http/tcp
ufw allow https/tcp
ufw logging on
ufw enable
ufw status

# Install Nginx
apt update
apt install nginx

# Add a dev forwarding endpoint
cat > /etc/nginx/sites-available/dev <<'CONF'
server {
  listen 80;
  listen [::]:80;
  server_name dev.yourservername.com;
  location ~ /.well-known {
    root /var/www/html;
    allow all;
  }
  location / {
    proxy_pass http://127.0.0.1:4040/;
    proxy_http_version 1.1;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
  }
}
CONF