Configure local Gemfile before force_ruby_platform
Configure local Gemfile before force_ruby_platform

Set the local Gemfile prior to configuring the target build platform
when building the main GitLab rails project. This change ensures builds
using a Gemfile outside the project root will have force_ruby_platform
set correctly and build gems for the ARM64 architecture.

Changelog: changed

gitlabhq/omnibus-gitlab,gitlabhq/omnibus-gitlab,gitlabhq/omnibus-gitlab,gitlabhq/omnibus-gitlab