Update start.sh

start.sh

@@ -1,5 +1,57 @@
-#!/usr/bin/env bash
+#!/bin/bash
+# ╔══════════════════════════════════════════════════════════════╗
+# ║  entrypoint.sh                                               ║
+# ║  1. Create /tmp/.X11-unix if missing                         ║
+# ║  2. Start Xvfb on :99 manually (avoids pyvirtualdisplay      ║
+# ║     permission issues when running as non-root)              ║
+# ║  3. Export DISPLAY=:99                                       ║
+# ║  4. Hand off to Python server                                ║
+# ╚══════════════════════════════════════════════════════════════╝
+
 set -e
 
-Xvfb :99 -screen 0 1280x720x24 -ac +extension RANDR &
+echo "[entrypoint] ── Starting up ──────────────────────────────"
+
+# ── 1. X11 socket directory ──────────────────────────────────
+# Xvfb needs this; fails silently if it doesn't exist when
+# running as non-root.  Pre-create it so Xvfb can use it.
+mkdir -p /tmp/.X11-unix
+chmod 1777 /tmp/.X11-unix 2>/dev/null || true
+echo "[entrypoint] /tmp/.X11-unix ready"
+
+# ── 2. Kill any stale Xvfb ───────────────────────────────────
+pkill Xvfb 2>/dev/null || true
+rm -f /tmp/.X11-unix/X99 2>/dev/null || true
+
+# ── 3. Start Xvfb on :99 ────────────────────────────────────
+echo "[entrypoint] Starting Xvfb on :99 ..."
+Xvfb :99 -screen 0 1920x1080x24 \
+     -ac \
+     +extension GLX \
+     +extension RANDR \
+     +render \
+     -noreset \
+     -nolisten tcp &
+
+XVFB_PID=$!
+echo "[entrypoint] Xvfb PID=$XVFB_PID"
+
+# ── 4. Wait for display to be usable ─────────────────────────
+for i in $(seq 1 20); do
+    if xdpyinfo -display :99 >/dev/null 2>&1; then
+        echo "[entrypoint] ✓ Display :99 is ready  (attempt $i)"
+        break
+    fi
+    sleep 0.5
+done
+
+# ── 5. Export display for all child processes ─────────────────
+export DISPLAY=:99
+echo "[entrypoint] DISPLAY=$DISPLAY"
+
+# ── 6. Trap signals so Xvfb dies with the container ──────────
+trap "echo '[entrypoint] Shutting down...'; kill $XVFB_PID 2>/dev/null; exit 0" SIGTERM SIGINT
+
+# ── 7. Launch Python server ───────────────────────────────────
+echo "[entrypoint] ── Launching server ────────────────────────"
 exec python server.py