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+bundle-cache(1) -- Package your needed `.gem` files into your application
+===========================================================================
+
+## SYNOPSIS
+
+`bundle cache`
+
+## DESCRIPTION
+
+Copy all of the `.gem` files needed to run the application into the
+`vendor/cache` directory. In the future, when running [bundle install(1)][bundle-install],
+use the gems in the cache in preference to the ones on `rubygems.org`.
+
+## GIT AND PATH GEMS
+
+The `bundle cache` command can also package `:git` and `:path` dependencies
+besides .gem files. This needs to be explicitly enabled via the `--all` option.
+Once used, the `--all` option will be remembered.
+
+## SUPPORT FOR MULTIPLE PLATFORMS
+
+When using gems that have different packages for different platforms, Bundler
+supports caching of gems for other platforms where the Gemfile has been resolved
+(i.e. present in the lockfile) in `vendor/cache`.  This needs to be enabled via
+the `--all-platforms` option. This setting will be remembered in your local
+bundler configuration.
+
+## REMOTE FETCHING
+
+By default, if you run `bundle install(1)`](bundle-install.1.html) after running
+[bundle cache(1)](bundle-cache.1.html), bundler will still connect to `rubygems.org`
+to check whether a platform-specific gem exists for any of the gems
+in `vendor/cache`.
+
+For instance, consider this Gemfile(5):
+
+    source "https://rubygems.org"
+
+    gem "nokogiri"
+
+If you run `bundle cache` under C Ruby, bundler will retrieve
+the version of `nokogiri` for the `"ruby"` platform. If you deploy
+to JRuby and run `bundle install`, bundler is forced to check to
+see whether a `"java"` platformed `nokogiri` exists.
+
+Even though the `nokogiri` gem for the Ruby platform is
+_technically_ acceptable on JRuby, it has a C extension
+that does not run on JRuby. As a result, bundler will, by default,
+still connect to `rubygems.org` to check whether it has a version
+of one of your gems more specific to your platform.
+
+This problem is also not limited to the `"java"` platform.
+A similar (common) problem can happen when developing on Windows
+and deploying to Linux, or even when developing on OSX and
+deploying to Linux.
+
+If you know for sure that the gems packaged in `vendor/cache`
+are appropriate for the platform you are on, you can run
+`bundle install --local` to skip checking for more appropriate
+gems, and use the ones in `vendor/cache`.
+
+One way to be sure that you have the right platformed versions
+of all your gems is to run `bundle cache` on an identical
+machine and check in the gems. For instance, you can run
+`bundle cache` on an identical staging box during your
+staging process, and check in the `vendor/cache` before
+deploying to production.
+
+By default, [bundle cache(1)](bundle-cache.1.html) fetches and also
+installs the gems to the default location. To package the
+dependencies to `vendor/cache` without installing them to the
+local install location, you can run `bundle cache --no-install`.