Merge pull request brefphp#551 from brefphp/improve-deploy-docs

Improve documentation for on-boarding new users

Update layer versions

Update Bref layers

Merge pull request brefphp#519 from Nyholm/tag

Tag docker images when tag on Github

Publish runtimes for PHP 7.4

Upgrade layer versions

Update the PHP extensions docs: imagick is not enabled by default

Update layers following brefphp#480

Merge pull request brefphp#476 from brefphp/bref.dev

Add bref.dev short URLs

Merge branch 'bref-binary-response'