Split nginx' sa.conf
diff --git a/nginx/id.sa.conf b/nginx/id.sa.conf
new file mode 100644
index 0000000..9dbac41
--- /dev/null
+++ b/nginx/id.sa.conf
@@ -0,0 +1,16 @@
+server {
+    listen 443 ssl;
+    listen [::]:443 ssl;
+
+    server_name id.miau.local;
+
+    location /auth/ {   # Gerrit adds this prefix for Keycloak...
+        rewrite ^/auth(.*)$ $1 last;
+    }
+
+    location / {
+        proxy_pass          http://keycloak:8080;
+        proxy_set_header    X-Forwarded-For $remote_addr;
+        proxy_set_header    Host $host;
+    }
+}