Add simple release script (gem-only)

Rakefile

@@ -1,8 +1,6 @@
-require 'bundler/gem_tasks'
-
 require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new(:spec) do |t|
   t.pattern = 'spec/cypress_on_rails/*_spec.rb'
 end
 
-task default: %w[spec build]
+task default: :spec

rakelib/release.rake

@@ -15,15 +15,15 @@ desc("Releases the gem using the given version.
 
 IMPORTANT: the gem version must be in valid rubygem format (no dashes).
 
-This task depends on the gem-release ruby gem which is installed via `bundle install`
+This task depends on the gem-release (ruby gem) which is installed via `bundle install`
 
 1st argument: The new version in rubygem format (no dashes). Pass no argument to
               automatically perform a patch version bump.
 2nd argument: Perform a dry run by passing 'true' as a second argument.
 
 Note, accept defaults for rubygems options. Script will pause to get 2FA tokens.
 
-Example: `rake release[1.19.0,false]`")
+Example: `rake release[2.1.0,false]`")
 task :release, %i[gem_version dry_run] do |_t, args|
   include CypressOnRails::TaskHelpers
 
@@ -40,7 +40,7 @@ task :release, %i[gem_version dry_run] do |_t, args|
 
   # See https://github.com/svenfuchs/gem-release
   sh_in_dir(gem_root, "git pull --rebase")
-  sh_in_dir(gem_root, "gem bump --no-commit #{gem_version.strip.empty? ? '' : %(-v #{gem_version})}")
+  sh_in_dir(gem_root, "gem bump --no-commit --file lib/cypress_on_rails/version.rb #{gem_version.strip.empty? ? '' : %(-v #{gem_version})}")
 
   # Release the new gem version
   puts "Carefully add your OTP for Rubygems. If you get an error, run 'gem release' again."

rakelib/task_helpers.rb

@@ -9,7 +9,15 @@ def gem_root
 
     # Executes a string or an array of strings in a shell in the given directory
     def sh_in_dir(dir, *shell_commands)
-      shell_commands.flatten.each { |shell_command| sh %(cd #{dir} && #{shell_command.strip}) }
+      Dir.chdir(dir) do
+        # Without `with_unbundled_env`, running bundle in the child directories won't correctly
+        # update the Gemfile.lock
+        Bundler.with_unbundled_env do
+          shell_commands.flatten.each do |shell_command|
+            sh(shell_command.strip)
+          end
+        end
+      end
     end
   end
-end
+end