Notify when an updated parameter requires re-creating the container.

[lu0]

The container needs to be restarted when breaking changes are made to the config file (when branch, tag, etc... are modified). Either:

• Notify the user (and document) when an updated parameter requires re-creating the container.

Or

• Add a script with options --upgrade to re-create the repo directory within the container.

Or

• Add a script which tracks the state of the config file and re-clones the repo if a breaking change was made.