Redirecting Uppercase URLs to Lowercase in a Dokku Powered App
By default, Dokku Nginx's config doesn't redirect uppercase urls to their lowercase version.
SEO experts say it might not be good having the same page served by two distinct urls like:
youapp.com/FOO. Let's see how we can do that.
Override Nginx configuration
We need to override Nginx default configuration so we can change it.
Check the version of Dokku running on your server:
Download Nginx default config on
0.21.4 by your version number) and put its content in a file
nginx.conf.sigil in the root of your app.
Add the following
location directive inside the corresponding ssl
server (before the main
location /), commit and deploy:
If you see the error below when deploying, it's because you don't have the lua module installed.
You can confirm by checking that
50-mod-http-lua.conf is missing between enabled modules:
nginx-extras to have the lua module:
Great, you can check everything is ok by testing the Nginx config now:
If you list the enabled modules again, there we have it:
Finally, it's always good making a request to confirm we are redirecting with
301 Moved Permanently: