update make package shell for npm install

makepkg.sh

@@ -72,7 +72,7 @@ builddir=${rootdir}/build.ems
 makefe() {
     cd ${fedir}
     git pull
-    npm install --registry https://registry.npmmirror.com
+    npm install --force --registry https://registry.npmmirror.com
     echo -n "Building front-end vue ... "
     npm run build 1>/dev/null
     if [ $? = 0 ]; then