Add parameter to enable/disable Docker start on boot

manifests/init.pp

@@ -34,6 +34,10 @@
 #   Whether you want to docker daemon to start up
 #   Defaults to running
 #
+# [*service_enable*]
+#   Whether you want to docker daemon to start up at boot
+#   Defaults to true
+#
 # [*root_dir*]
 #   Custom root directory for containers
 #   Defaults to undefined
@@ -58,6 +62,7 @@ class docker(
   $use_upstream_package_source = $docker::params::use_upstream_package_source,
   $package_source_location     = $docker::params::package_source_location,
   $service_state               = $docker::params::service_state,
+  $service_enable              = $docker::params::service_enable,
   $root_dir                    = $docker::params::root_dir,
   $manage_kernel               = true,
   $dns                         = $docker::params::dns,

manifests/params.pp

@@ -9,6 +9,7 @@ class docker::params {
   $socket_bind                  = 'unix:///var/run/docker.sock'
   $use_upstream_package_source  = true
   $service_state                = running
+  $service_enable               = true
   $root_dir                     = undef
   $dns                          = undef
   case $::osfamily {

manifests/service.pp

@@ -19,6 +19,7 @@ class docker::service (
   $tcp_bind             = $docker::tcp_bind,
   $socket_bind          = $docker::socket_bind,
   $service_state        = $docker::service_state,
+  $service_enable       = $docker::service_enable,
   $root_dir             = $docker::root_dir,
   $extra_parameters     = $docker::extra_parameters,
 ){
@@ -26,7 +27,7 @@ class docker::service (
     'Debian': {
       service { 'docker':
         ensure     => $service_state,
-        enable     => true,
+        enable     => $service_enable,
         hasstatus  => true,
         hasrestart => true,
         provider   => upstart,