Parallels Plesk has built-in support for Composer these days (see here for some docs), which may be good 'news' (not that new maybe) in particular to MediaWiki users depending on shared hosting solutions. What are the opportunities and possible pitfalls of using the Plesk control panel to run Composer and install extensions for MW?
One problem I noticed is that all composer.json files can be automatically detected and then used to install or update dependencies, but that MW itself has switched to composer.local.json, which is outside the scope.