v0.6.0-ralpha.1+elderflowerspritz

Features

• Add dockerfile template to manifest (#311)
• Add porter upgrade command (#310)
• Doc current commands with helptext (#308)
• Use porter install in our docs (#304)
• add integer and boolean sets to wordpress example/test bundle (#246)

Fixes

• Fixed up a whitespace error in the Azure Wordpress example (#296)

Install or Upgrade

Run (or re-run) the installation from https://porter.sh/install to get the
latest version of porter.