diff --git a/examples/crash_reporter/backend/scripts/install-fe-builder-nginx.sh b/examples/crash_reporter/backend/scripts/install-fe-builder-nginx.sh
new file mode 100755
index 0000000..388108b
--- /dev/null
+++ b/examples/crash_reporter/backend/scripts/install-fe-builder-nginx.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+# Run on Gentoo FE as root — wire build proxy like hub/crashes (BE :443).
+set -euo pipefail
+
+NGINX_CONF="/etc/nginx/nginx.conf"
+APPS_CONF="/etc/nginx/apps.conf"
+SNIPPET='		location /app/androidcast_project/build/ {
+		 	proxy_pass https://artc0.intra.raptor.org/app/androidcast_project/build/;
+		}
+'
+
+if grep -q 'androidcast_project/build/' "$NGINX_CONF"; then
+  echo "nginx.conf already has androidcast_project/build/ location"
+else
+  if ! grep -q 'androidcast_project/crashes/' "$NGINX_CONF"; then
+    echo "Cannot find crashes block in $NGINX_CONF — add build block manually after crashes." >&2
+    exit 1
+  fi
+  python3 - "$NGINX_CONF" "$SNIPPET" << 'PY'
+import sys
+from pathlib import Path
+path, snippet = Path(sys.argv[1]), sys.argv[2]
+text = path.read_text()
+needle = "\t\tlocation /app/androidcast_project/crashes/ {\n"
+idx = text.find(needle)
+if idx < 0:
+    raise SystemExit("crashes location not found")
+end = text.find("\n\t\t}", idx)
+if end < 0:
+    raise SystemExit("crashes block end not found")
+end = text.find("\n", end + 1)
+path.write_text(text[:end] + "\n" + snippet + text[end:])
+print(f"Patched {path}")
+PY
+fi
+
+if [[ -f "$APPS_CONF" ]]; then
+  if grep -q 'proxy_pass http://artc0.intra.raptor.org:80' "$APPS_CONF" 2>/dev/null; then
+    cp -a "$APPS_CONF" "${APPS_CONF}.bak.$(date +%Y%m%d%H%M%S)"
+    sed -i 's|proxy_pass http://artc0.intra.raptor.org:80;|# DISABLED — use nginx.conf :443 upstream\n\t\t    # proxy_pass http://artc0.intra.raptor.org:80;|' "$APPS_CONF" || true
+    echo "Commented stale :80 build proxy in $APPS_CONF (backup created)"
+  fi
+fi
+
+nginx -t
+rc-service nginx reload
+
+echo
+echo "=== FE localhost curl ==="
+curl -sSI -H 'Host: apps.f0xx.org' 'http://127.0.0.1/app/androidcast_project/build/' -k 2>/dev/null \
+  | grep -E 'HTTP|location|x-powered-by' || \
+curl -sSI -H 'Host: apps.f0xx.org' 'https://127.0.0.1/app/androidcast_project/build/' -k \
+  | grep -E 'HTTP|location|x-powered-by'
+
+echo
+echo "Public check:"
+echo "  curl -sSI 'https://apps.f0xx.org/app/androidcast_project/build/' | grep -E 'HTTP|location|x-powered-by'"