How to set the output directory for bundler logs?

When I run bundle install it generates a log file in ./.bundle/install.log, which is alright. As the project is using git, I have to ignore this folder additionally.

I already have a folder ./tmp/log/, where I would like to see this install.log file of the bundler, because there are other log files and they are already ignored by git.

Is it somehow possible to change the output directory for log files of the bundler for this project (not via command line arguments, so that other user of the git repository automatically also have their install.log in the tmp directory)? Maybe it’s somehow controllable via the Gemfile?

Git Baby is a git and github fan, let's start git clone.