[bundle] Loads all gems from Internet at the new project creation

I’m new to rials, so when I create a new project (rails project like
“nails new …”) everything does it’s work fast, but bundle start
downloading everything (all necessarily gems) from the Internet, so
that’s quite huge amout of traffic and it’s a long time to wait for

I tried "sudo gem install …[names of gems bundle usually download
and install] ", but nothing changes - they are installed, but bundle
downloads them ones again anyway.

Thanks beforehand.