Remove /api/ proxy block from nginx config for Cloud Run compatibility

The proxy_pass to unity-auth-api:8081 causes nginx to fail on startup
in Cloud Run since that hostname doesn't exist. This block was added
after the last successful deploy and breaks the container startup.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: Jim Taber <taberj@objectcomputing.com>

Author: taberj-git

DockerfileFrontend-prod

@@ -1,5 +1,5 @@
 # Build the frontend and serve with nginx
-FROM node:18 AS builder
+FROM node:20 AS builder
 
 COPY frontend frontend
 WORKDIR frontend

nginx-default.conf

@@ -19,24 +19,6 @@ server {
         root   /usr/share/nginx/html;
     }
 
-    # TODO: This tries to route the requests from localhost to the API container
-    # with hostname unity-auth-api but currently receive 504 Gateway Timeout
-    location /api/ {
-        proxy_pass http://unity-auth-api:8081;
-        proxy_http_version 1.1;
-
-        proxy_connect_timeout       60s;
-        proxy_send_timeout          60s;
-        proxy_read_timeout          60s;
-        send_timeout                60s;
-
-        # Forward headers
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-    }
-
     # proxy the PHP scripts to Apache listening on 127.0.0.1:80
     #
     #location ~ \.php$ {