Support refreshonly flag

README.md

@@ -751,6 +751,7 @@ docker::exec { 'cron_allow_root':
   command      => '/bin/echo root >> /usr/lib/cron/cron.allow',
   tty          => true,
   unless       => 'grep root /usr/lib/cron/cron.allow 2>/dev/null',
+  refreshonly  => true,
 }
 ```
 

manifests/exec.pp

@@ -10,6 +10,7 @@
   Optional[String] $command        = undef,
   Optional[String] $unless         = undef,
   Optional[Boolean] $sanitise_name = true,
+  Optional[Boolean] $refreshonly   = false,
 ) {
   include docker::params
 
@@ -37,6 +38,7 @@
   exec { $exec:
     environment => 'HOME=/root',
     path        => ['/bin', '/usr/bin'],
+    refreshonly => $refreshonly,
     timeout     => 0,
     unless      => $unless_command,
   }

spec/acceptance/docker_full_spec.rb

@@ -662,6 +662,55 @@ class { 'docker':}
           expect(r.stdout).to match(/test_command_file.txt/)
         end
       end
+
+      it 'should only run if notified when refreshonly is true' do
+        container_name = 'container_4_2'
+        pp=<<-EOS
+          class { 'docker': }
+
+          docker::image { 'ubuntu': }
+
+          docker::run { '#{container_name}':
+            image   => 'ubuntu',
+            command => 'init',
+          }
+
+          docker::exec { 'test_command':
+            container   => '#{container_name}',
+            command     => 'touch /root/test_command_file.txt',
+            refreshonly => true,
+          }
+        EOS
+
+        apply_manifest(pp, :catch_failures => true)
+        apply_manifest(pp, :catch_changes => true) unless fact('selinux') == 'true'
+
+        # A sleep to give docker time to execute properly
+        sleep 4
+
+        shell("docker exec #{container_name} ls /root") do |r|
+          expect(r.stdout).to_not match(/test_command_file.txt/)
+        end
+
+        pp_extra=<<-EOS
+          file { '/tmp/dummy_file':
+            ensure => 'present',
+            notify => Docker::Exec['test_command'],
+          }
+        EOS
+
+        pp2 = pp + pp_extra
+
+        apply_manifest(pp2, :catch_failures => true)
+        apply_manifest(pp2, :catch_changes => true) unless fact('selinux') == 'true'
+
+        # A sleep to give docker time to execute properly
+        sleep 4
+
+        shell("docker exec #{container_name} ls /root") do |r|
+          expect(r.stdout).to match(/test_command_file.txt/)
+        end
+      end
     end
   end
 end