Installing debase gem (for debugging): Permission error

Since I need the ruby-debug-ide-0.4.22 gem to start debugging, Rubymine tried to install it with the errors below:

1:43:26 PM Error running Development: fam: Failed to Install Gems. Following gems were not installed:
/home/bitnami/RubyMine-6.0.3/rb/gems/debase-0.0.9.gem:  Error installing debase-0.0.9.gem:
     ERROR: Failed to build gem native extension.      /opt/bitnami/ruby/bin/ruby extconf.rb checking for vm_core.h... no checking for vm_core.h... no checking for vm_core.h... yes creating Makefile  make "DESTDIR=" compiling breakpoint.c compiling locker.c compiling context.c compiling debase_internals.c linking shared-object debase_internals.so  make "DESTDIR=" install /usr/bin/install -c -m 0755 debase_internals.so /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/x86_64-linux /usr/bin/install: cannot create regular file `/opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/x86_64-linux/debase_internals.so': Permission denied make: *** [install-so] Error 1   Gem files will remain installed in /home/bitnami/.gem/ruby/2.1.0/gems/debase-0.0.9 for inspection. Results logged to /home/bitnami/.gem/ruby/2.1.0/gems/debase-0.0.9/ext/gem_make.out
/home/bitnami/RubyMine-6.0.3/rb/gems/ruby-debug-ide-0.4.22.gem:  Error installing ruby-debug-ide-0.4.22.gem:
     ERROR: Failed to build gem native extension.      /opt/bitnami/ruby/bin/ruby mkrf_conf.rb Installing base gem You don't have write permissions for the /opt/bitnami/ruby/lib/ruby/gems/2.1.0 directory. /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/installer.rb:586:in `verify_gem_home'   /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/installer.rb:750:in `pre_install_checks'   /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/installer.rb:207:in `install'   /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/dependency_installer.rb:371:in `block in install'   /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/dependency_installer.rb:331:in `each'   /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/dependency_installer.rb:331:in `each_with_index'   /opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/rubygems/dependency_installer.rb:331:in `install'   mkrf_conf.rb:34:in `rescue in '   mkrf_conf.rb:27:in `'   Gem files will remain installed in /home/bitnami/.gem/ruby/2.1.0/gems/ruby-debug-ide-0.4.22 for inspection. Results logged to /home/bitnami/.gem/ruby/2.1.0/gems/ruby-debug-ide-0.4.22/ext/gem_make.out
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I think the first error is:

/usr/bin/install: cannot create regular file `/opt/bitnami/ruby/lib/ruby/site_ruby/2.1.0/x86_64-linux/debase_internals.so': Permission denied 

Which is a plain file permission error. Well, that seems logical to me since the ruby interpreter and gems are managed by root. And since I have a regular user account in which i installed rubymine,  the IDE cant install whatever it wants to. Luckily I am blessed with sudo permissions to install gems.
So I tried to install it in my console with

gem install debase-0.0.9
ERROR:  Could not find a valid gem 'debase-0.0.9' (>= 0) in any repository

Does that gem come from a jetbrains repo? How can I add that repo?
Or can I use the IDE to install a gem with sudo?

PS. The machine is a VM from bitnami which was preconfigured with a rubystack.