Rakefile in imap-backup-3.2.1 vs Rakefile in imap-backup-3.3.0

@@ -4,9 +4,15 @@
 
 RSpec::Core::RakeTask.new do |t|
   t.pattern = "spec/**/*_spec.rb"
 end
 
+desc "Run RSpec examples, excluding ones relying on Docker IMAP"
+RSpec::Core::RakeTask.new("no-docker") do |t|
+  t.pattern = "spec/**/*_spec.rb"
+  t.rspec_opts = "--tag ~docker"
+end
+
 RuboCop::RakeTask.new
 
 task default: :spec
 task default: :rubocop