feat: optimize docker build pipeline with dockerignore, automated entrypoint migrations, and configurable compose image

docker-entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+# Run Prisma database migrations if DATABASE_URL is set and not explicitly skipped
+if [ -n "$DATABASE_URL" ] && [ "$SKIP_DB_MIGRATE" != "true" ]; then
+  echo "[CheckFlow] Checking and applying database migrations..."
+  if [ -f "./node_modules/prisma/build/index.js" ]; then
+    node ./node_modules/prisma/build/index.js migrate deploy --schema=./prisma/schema.prisma || echo "[CheckFlow] Warning: Prisma migration step skipped or encountered non-fatal error."
+  fi
+fi
+
+exec "$@"