➕(project) configure Keycloak server to support OIDC

Create a realm 'impress' and configure it to support
the authorization code flow.

docker/files/etc/nginx/conf.d/default.conf

@@ -17,3 +17,15 @@ server {
 
 }
 
+server {
+    listen 8083;
+    server_name localhost;
+    charset utf-8;
+
+    location / {
+        proxy_pass http://keycloak:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    }
+}