Give better log infomation in Pages job

Migrated issue

Problem/Motivation

Adding MkDocs files to a project triggers the 'pages' job which builds the documentation site. But there is very little information shown in the log on what has actually been done.

The pages job log has

Building documentation to directory: /builds/project/{project name}/public

but nothing else useful.

The pages:deploy log is not viewable.

Proposed resolution

Give some information on what has been built and where the new documentation exists, and provide a url