chore: fix npm build

Author: guiseek

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "dev": "nx run-many -t serve --projects=server,devmx --configuration=development",
     "dev:server": "nx serve server",
-    "build:server": "export NODE_ENV=production && nx build server",
+    "build:server": "export NODE_ENV=production && npx nx build server",
     "dev:mx": "nx serve devmx",
     "affected": "nx affected -t lint test build --parallel=10",
     "commit": "czg"