puppet module install puppetlabs-firewall --version 1
-puppet module install puppetlabs-stdlib --version 4
+# pinned to 4.18, as from version 4.19 the "file_line" is not able to remove "search" and "domain" lines from the container's resolv.conf
+puppet module install puppetlabs-stdlib --version 4.18
puppet module install puppetlabs-apt --version 2
puppet module install puppetlabs-postgresql --version 4
puppet module install puppetlabs-mysql --version 3