diff --git a/Dockerfile b/Dockerfile
index 66f9c91..8a70e17 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,4 +2,4 @@ FROM ruby:2.4
 
 MAINTAINER Jacob Henner <code@ventricle.us>
 
-RUN gem install puppet puppet-lint puppet-syntax rspec-puppet puppetlabs_spec_helper jsonlint yaml-lint
+RUN gem install puppet puppet-lint puppet-syntax rspec-puppet puppetlabs_spec_helper jsonlint yaml-lint metadata-json-lint  semantic_puppet rubocop rubocop-rspec pdk
diff --git a/README.md b/README.md
index a603507..2e08913 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,11 @@ This Docker image is useful for testing Puppet code, especially as the base imag
 5. puppetlabs_spec_helper 
 6. jsonlint 
 7. yaml-lint
+8. metadata-json-lint
+9. semantic_puppet
+10. rubocop
+11. rubocop-rspec
+12. pdk
 
 ## Using this image
 To pull this image: `docker pull jacobhenner/puppet-test`