Upload prestart.sh

prestart.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+# =============================================================================
+# prestart.sh — Container entrypoint for CRM System
+#
+# Responsibilities:
+#   1. Run Alembic DB migrations (alembic upgrade head).
+#   2. Start uvicorn as PID 1 (so signals like SIGTERM are forwarded correctly).
+#
+# Notes:
+#   - `set -e` ensures the container crashes loudly if migrations fail,
+#     rather than starting a broken app on an inconsistent schema.
+#   - `exec uvicorn ...` replaces the shell process with uvicorn, so uvicorn
+#     becomes PID 1 and receives Docker's SIGTERM directly for graceful shutdown.
+#   - `--workers 1` is intentional for v1: SQLite (dev) is single-threaded,
+#     and asyncpg (prod) scales fine with one worker + an async connection pool.
+# =============================================================================
+
+set -e
+
+echo "[prestart] $(date -u +%Y-%m-%dT%H:%M:%SZ) - Running alembic upgrade head..."
+alembic upgrade head
+echo "[prestart] DB migrations completed successfully."
+
+echo "[prestart] Starting uvicorn on 0.0.0.0:8000 (workers=1)..."
+exec uvicorn app.main:app \
+    --host 0.0.0.0 \
+    --port 8000 \
+    --workers 1