$ bundle install --path vendor/bundle
[DEPRECATED] The `--path` flag is deprecated because it relies on being remembered across bundler invocations, which bundler will no longer do in future versions. Instead please use `bundle config set path 'vendor/bundle'`, and stop using this flag
Fetching gem metadata from http://rubygems.org/...........
Fetching gem metadata from http://rubygems.org/.
Resolving dependencies.....
...
After
$ bundle config set path 'vendor/bundle'
$ bundle install
Fetching gem metadata from http://rubygems.org/...........
Fetching gem metadata from http://rubygems.org/.
Resolving dependencies....
...
Before
After