GitHub's base images have all the modern php versions pre-installed (as php7.1, php7.2, etc., Debian-style), including composer, xdebug and most anything else we need.
Use that directly, instead of various complex third-party docker and Webpack-compiled Node.js scripts (?) to install other novel PHP binaries, and run-time downloading composer, with each step running in a different container with different packages present.
GitHub's base images have all the modern php versions pre-installed (as php7.1, php7.2, etc., Debian-style), including composer, xdebug and most anything else we need.
Use that directly, instead of various complex third-party docker and Webpack-compiled Node.js scripts (?) to install other novel PHP binaries, and run-time downloading composer, with each step running in a different container with different packages present.
Runtime from last build before this commit https://github.com/wikimedia/composer-merge-plugin/actions/runs/638619206
Runtime from one the builds for this commit: https://github.com/wikimedia/composer-merge-plugin/actions/runs/731586116