Installing docker-ce through puppet - docker

Question

Im trying to install docker-ce through puppet and i have a couple of questions.
1: Does apt::key automatically do a 'apt-get update' afterwards?
2: How can i use the apt:ppa module to add the docker-ce repository?
this is done with:
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"
But how would i use the apt::ppa to include distribution and release?
This is the whole puppet block:
class docker {
$prerequisites = ['apt-transport-https', 'ca-certificates', 'curl']
package { $prerequisites: ensure => installed}
apt::key { 'docker-ce':
ensure => present,
id => '9DC858229FC7DD38854AE2D88D81803C0EBFCD88',
options => 'https://download.docker.com/linux/ubuntu/gpg',
}
apt::ppa {''}
package {'docker-ce': ensure => installed}
}
EDIT:
Ended up using the apt module with apt::source, hardcoded release because i know all my systems will run it.
class docker {
include apt
$prerequisites = ['apt-transport-https', 'ca-certificates']
package { $prerequisites: ensure => installed} ->
apt::key { 'docker-ce':
ensure => present,
id => '9DC858229FC7DD38854AE2D88D81803C0EBFCD88',
options => 'https://download.docker.com/linux/ubuntu/gpg',
} ->
apt::source {'docker-ce':
location => 'https://download.docker.com/linux/ubuntu',
release => 'xenial'
} ->
exec { 'apt-get-update':
command => '/usr/bin/apt-get update'
} ->
package {'docker-ce': ensure => installed}
}

Answer 1

Here's how I'm installing this:
apt::key { '9DC858229FC7DD38854AE2D88D81803C0EBFCD88':
source => 'https://download.docker.com/linux/ubuntu/gpg',
} ->
apt::source { 'docker-ce':
architecture => 'amd64',
location => 'https://download.docker.com/linux/ubuntu',
repos => 'stable',
release => $::lsbdistcodename,
} ->
package { 'docker-ce':
ensure => 'latest',
require => Exec['apt_update'],
}