Update readme.md

readme.md

@@ -193,7 +193,7 @@ location / {
 }
 ```
 
-If you are using HTTPS and things aren't working try adding `FORCE_HTTPS=true` to the end of your `.env` file
+If you are using HTTPS and things aren't working try adding `FORCE_HTTPS=true` to the end of your `.env` file or proxy to the https version of the app.
 
 ### Self-signed certificates and local CAs
 Per default Heimdall uses the standard certificate bundle file (`ca-certificates.crt`) to verify HTTPS sites and will ignore additional certificates placed in `/etc/ssl/certs`. If you wish to use enhanced apps with HTTPS sites that use a self-signed certificate or certs signed with your own local CA, you can override the default bundle: