Fixed issue with .env.vagrant not setting RAILS_ENV variable (#15709)

* Fixed issue with .env.vagrant not setting RAILS_ENV variable

* made change to fix RAILS_ENV issue in Vagrantfile instead of .env.vagrant

Vagrantfile

@@ -72,10 +72,12 @@ bundle install
 yarn install
 
 # Build Mastodon
+export RAILS_ENV=development 
 export $(cat ".env.vagrant" | xargs)
 bundle exec rails db:setup
 
 # Configure automatic loading of environment variable
+echo 'export RAILS_ENV=development' >> ~/.bash_profile
 echo 'export $(cat "/vagrant/.env.vagrant" | xargs)' >> ~/.bash_profile
 
 SCRIPT