diff --git a/.overcommit.yml b/.overcommit.yml
index 31699e74..1b03fad7 100644
--- a/.overcommit.yml
+++ b/.overcommit.yml
@@ -58,6 +58,7 @@ PrePush:
     enabled: true
     description: 'Run rake targets'
     targets:
+      - 'validate'
       - 'test'
       - 'rubocop'
     command: [ 'bundle', 'exec', 'rake' ]
diff --git a/.sync.yml b/.sync.yml
index cdec6c97..169bbe60 100644
--- a/.sync.yml
+++ b/.sync.yml
@@ -1,3 +1,9 @@
 ---
 .travis.yml:
-  secret: "D0l5n9nSaR4BTQ/fB95EWk0CuiSjLCaYDo6W5hesyaehBACbQqexEGBW2XLRlAIGz4QHgA6z87gu1Y7FMuot7xJXqgur4NU4pbrdzjz/gLuVPRxxWEmAp68yBwkwO2QoC3ISfzgRJjOMlTfAjM7dROpAoRPuNDMFGdAoC259ggA="
+  secret: "bBDDSSz8OQwK0zxJ4EjM01bE4uoNMzTXyxp2lllXdv6PYAJCI4bCCcdRF7OKLAWaRtm6c0HJGnfMXzmwqHF/pJSUZzfTGe4uwZrrmaGvdalP4fXtLWpviAoez8La0Nx7JYqwPPprP7nySBD8M3rUuOZJetXQM6yGgj4YSs2lKMo="
+  docker_sets:
+    - set: ubuntu1404-64
+    - set: ubuntu1604-64
+    - set: debian8-64
+    - set: debian9-64
+    - set: centos7-64
diff --git a/.travis.yml b/.travis.yml
index b7b75a7c..1f25e080 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,36 @@ matrix:
   - rvm: 2.5.1
     bundler_args: --without system_tests development release
     env: PUPPET_VERSION="~> 5.0" CHECK=build DEPLOY_TO_FORGE=yes
+  - rvm: 2.5.1
+    bundler_args: --without development release
+    dist: trusty
+    env: PUPPET_INSTALL_TYPE=agent BEAKER_IS_PE=no BEAKER_PUPPET_COLLECTION=puppet5 BEAKER_debug=true BEAKER_setfile=ubuntu1404-64{hypervisor=docker} CHECK=beaker
+    services: docker
+    sudo: required
+  - rvm: 2.5.1
+    bundler_args: --without development release
+    dist: trusty
+    env: PUPPET_INSTALL_TYPE=agent BEAKER_IS_PE=no BEAKER_PUPPET_COLLECTION=puppet5 BEAKER_debug=true BEAKER_setfile=ubuntu1604-64{hypervisor=docker} CHECK=beaker
+    services: docker
+    sudo: required
+  - rvm: 2.5.1
+    bundler_args: --without development release
+    dist: trusty
+    env: PUPPET_INSTALL_TYPE=agent BEAKER_IS_PE=no BEAKER_PUPPET_COLLECTION=puppet5 BEAKER_debug=true BEAKER_setfile=debian8-64{hypervisor=docker} CHECK=beaker
+    services: docker
+    sudo: required
+  - rvm: 2.5.1
+    bundler_args: --without development release
+    dist: trusty
+    env: PUPPET_INSTALL_TYPE=agent BEAKER_IS_PE=no BEAKER_PUPPET_COLLECTION=puppet5 BEAKER_debug=true BEAKER_setfile=debian9-64{hypervisor=docker} CHECK=beaker
+    services: docker
+    sudo: required
+  - rvm: 2.5.1
+    bundler_args: --without development release
+    dist: trusty
+    env: PUPPET_INSTALL_TYPE=agent BEAKER_IS_PE=no BEAKER_PUPPET_COLLECTION=puppet5 BEAKER_debug=true BEAKER_setfile=centos7-64{hypervisor=docker} CHECK=beaker
+    services: docker
+    sudo: required
 branches:
   only:
   - master
@@ -40,7 +70,7 @@ deploy:
   provider: puppetforge
   user: puppet
   password:
-    secure: ""
+    secure: "bBDDSSz8OQwK0zxJ4EjM01bE4uoNMzTXyxp2lllXdv6PYAJCI4bCCcdRF7OKLAWaRtm6c0HJGnfMXzmwqHF/pJSUZzfTGe4uwZrrmaGvdalP4fXtLWpviAoez8La0Nx7JYqwPPprP7nySBD8M3rUuOZJetXQM6yGgj4YSs2lKMo="
   on:
     tags: true
     # all_branches is required to use tags
diff --git a/README.md b/README.md
index 55a1a1ee..3f2aec4c 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ This module has been tested to work on the following systems.
 * Debian 9
 * EL 6
 * EL 7
+* CentOS 7
 * Gentoo (and Sabayon)
 * Suse 11
 * Ubuntu 14.04
diff --git a/manifests/install.pp b/manifests/install.pp
index 0a91976f..bddfd0ec 100644
--- a/manifests/install.pp
+++ b/manifests/install.pp
@@ -28,12 +28,6 @@
     'Gentoo' => undef,
   }
 
-  $dev_ensure = $python::dev ? {
-    true    => 'present',
-    false   => 'absent',
-    default => $python::dev,
-  }
-
   $pip_ensure = $python::pip ? {
     true    => 'present',
     false   => 'absent',
@@ -46,6 +40,21 @@
     default => $python::virtualenv,
   }
 
+  if $venv_ensure == 'present' {
+    $dev_ensure = 'present'
+    unless $python::dev {
+      # Error: python2-devel is needed by (installed) python-virtualenv-15.1.0-2.el7.noarch
+      # Python dev is required for virtual environment, but python environment is not required for python dev.
+      notify { 'Python virtual environment is dependent on python dev': }
+    }
+  } else {
+    $dev_ensure = $python::dev ? {
+      true    => 'present',
+      false   => 'absent',
+      default => $python::dev,
+    }
+  }
+
   package { 'python':
     ensure => $python::ensure,
     name   => $python,
@@ -96,6 +105,7 @@
       Package <| title == 'virtualenv' |> {
         name     => 'virtualenv',
         provider => 'pip',
+        require  => Package['python-dev']
       }
     }
     'scl': {
diff --git a/spec/classes/python_spec.rb b/spec/classes/python_spec.rb
index a82c3d71..d5ee2771 100644
--- a/spec/classes/python_spec.rb
+++ b/spec/classes/python_spec.rb
@@ -31,6 +31,17 @@
             end
           end
 
+          describe 'with python::virtualenv, without python::dev' do
+            context 'true' do
+              let(:params) { { dev: 'absent', virtualenv: 'present' } }
+
+              it { is_expected.to contain_package('python-dev').with_ensure('present') }
+            end
+            context 'empty/default' do
+              it { is_expected.to contain_package('python-dev').with_ensure('absent') }
+            end
+          end
+
           describe 'with manage_gunicorn' do
             context 'true' do
               let(:params) { { manage_gunicorn: true } }
diff --git a/spec/spec_helper_acceptance.rb b/spec/spec_helper_acceptance.rb
index bede2bcb..c978c402 100644
--- a/spec/spec_helper_acceptance.rb
+++ b/spec/spec_helper_acceptance.rb
@@ -1,33 +1,19 @@
 require 'beaker-rspec'
+require 'beaker-puppet'
+require 'beaker/puppet_install_helper'
+require 'beaker/module_install_helper'
 
-UNSUPPORTED_PLATFORMS = ['windows'].freeze
-
-unless ENV['RS_PROVISION'] == 'no' || ENV['BEAKER_provision'] == 'no'
-  hosts.each do |host|
-    if host.is_pe?
-      install_pe
-    else
-      install_puppet
-    end
-  end
-end
+run_puppet_install_helper unless ENV['BEAKER_provision'] == 'no'
+install_ca_certs unless ENV['PUPPET_INSTALL_TYPE'] =~ %r{pe}i
+install_module_on(hosts)
+install_module_dependencies_on(hosts)
 
 RSpec.configure do |c|
-  # Project root
-  proj_root = File.expand_path(File.join(File.dirname(__FILE__), '..'))
-
   # Readable test descriptions
   c.formatter = :documentation
-
-  # Configure all nodes in nodeset
-  c.before :suite do
-    # Install module and dependencies
-    hosts.each do |host|
-      shell('rm -rf /etc/puppet/modules/python/')
-      copy_module_to(host, source: proj_root, module_name: 'python')
-      shell("/bin/touch #{default['puppetpath']}/hiera.yaml")
-      on host, puppet('module install puppetlabs-stdlib'), acceptable_exit_codes: [0, 1]
-      on host, puppet('module install stahnma-epel'), acceptable_exit_codes: [0, 1]
+  hosts.each do |host|
+    if host[:platform] =~ %r{el-7-x86_64} && host[:hypervisor] =~ %r{docker}
+      on(host, "sed -i '/nodocs/d' /etc/yum.conf")
     end
   end
 end