Create start.sh

start.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "== Runtime environment =="
+echo "Python: $(python --version)"
+echo "Pip: $(python -m pip --version || true)"
+echo "User: $(id)"
+echo "Workdir: $(pwd)"
+echo "Listing /app:"
+ls -la /app || true
+echo "PORT is: ${PORT:-7860}"
+
+# Convert any CRLF to LF for safety (no-op if dos2unix not present)
+if command -v dos2unix >/dev/null 2>&1; then
+  find /app -type f -maxdepth 1 -name "*.py" -print -exec dos2unix {} \; || true
+fi
+
+# Sanity test: can we bind to the port?
+python - <<'PY'
+import os, socket, sys
+port = int(os.environ.get("PORT", "7860"))
+s = socket.socket()
+try:
+    s.bind(("0.0.0.0", port))
+    s.close()
+    print(f"Bind check passed on port {port}.")
+except OSError as e:
+    print(f"Bind check failed on port {port}: {e}", file=sys.stderr)
+    sys.exit(1)
+PY
+
+# Show installed packages (short)
+python - <<'PY'
+import pkgutil
+mods = sorted(m.name for m in pkgutil.iter_modules())
+print("Some installed modules:", ", ".join(mods[:30]), "...")
+PY
+
+echo "== Launching Streamlit =="
+exec streamlit run app.py --server.port="${PORT:-7860}" --server.address=0.0.0.0 --server.enableCORS=false --server.enableXsrfProtection=false --logger.level=debug