fix(keyCloak): fix openresty keycloak deployment recipe (#3655)

Co-authored-by: Joe Boccanfuso <joe.boccanfuso@radicalimaging.com>

platform/app/.recipes/Nginx-Dcm4chee/nginx-proxy/conf/nginx.conf

@@ -0,0 +1,49 @@
+events {
+  worker_connections  4096;  ## Default: 1024
+}
+
+http {
+    server {
+    listen 80 default_server;
+    server_name localhost;
+
+        #
+        # Wide-open CORS config for nginx
+        #
+        location / {
+            if ($request_method = 'OPTIONS') {
+                add_header 'Access-Control-Allow-Origin' '*';
+                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+                #
+                # Custom headers and headers various browsers *should* be OK with but aren't
+                #
+                add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
+                #
+                # Tell client that this pre-flight info is valid for 20 days
+                #
+                add_header 'Access-Control-Allow-Headers' 'Authorization';
+                add_header 'Access-Control-Allow-Credentials' true;
+                add_header 'Access-Control-Max-Age' 1728000;
+                add_header 'Content-Length' 0;
+                return 204;
+            }
+            if ($request_method = 'POST') {
+                add_header 'Access-Control-Allow-Origin' '*';
+                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+                add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
+                add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
+            }
+            if ($request_method = 'GET') {
+                add_header 'Access-Control-Allow-Origin' '*';
+                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+                add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
+                add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
+                add_header 'Access-Control-Allow-Headers' 'Authorization';
+                add_header 'Access-Control-Allow-Credentials' true;
+            }
+
+            proxy_pass http://orthanc:8042;
+        }
+
+    }
+}