Add more instructions how to use this program

README.md

@@ -18,6 +18,34 @@ embed for you. The embed will be the same as the one you would get if you send a
 | UPLOAD_FOLDER | Path to the directory where we store files.                      |
 | WEBHOOK_URL   | Discord Webhook URL                                              |
 
+## Howto
+
+Your webserver infront of discord-embed needs to be configured for this program to work.
+
+Nginx:
+```nginx
+# One subdomain that is a reverse proxy to discord-embed and one subdomain (SERVE_DOMAIN) for images
+# The SERVE_DOMAIN url needs this:
+root /var/www/embed; # The UPLOAD_FOLDER where our images are
+location / {
+    try_files $uri $uri/ $uri.html =404; # Note the $uri.html
+}
+```
+
+Caddy:
+```
+# SERVE_DOMAIN = i.example.com
+# UPLOAD_FOLDER = /var/www/embed
+embed.example.com {
+  reverse_proxy * http://discord-embed:5000 # The Docker container where discord-embed runs
+}
+
+i.example.com {
+  root * /var/www/embed
+  try_files {uri} {uri}/ {uri}.html
+  file_server
+}
+```
 ## Need help?
 
 - Email: [tlovinator@gmail.com](mailto:tlovinator@gmail.com)