Fix Prisma runtime by switching API image to Debian slim

Alpine musl is incompatible with host-built Prisma engines; use bookworm-slim and allow updating entrypoint without repacking the bundle.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker-entrypoint.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 set -e
 
+echo "DATABASE_URL host check..."
 echo "Waiting for database & applying migrations..."
 i=0
 until npx prisma migrate deploy; do
@@ -18,5 +19,5 @@ if [ "${RUN_SEED:-false}" = "true" ]; then
   npx prisma db seed || true
 fi
 
-echo "Starting API..."
+echo "Starting API on port ${PORT:-3000}..."
 exec node dist/main.js