v5.8.2

Release 5.8.2 (January 2022)

• Upgrade to Wordpress 5.8.2
• Upgrade to the latest version of the plugins
• Upgrade to php 8.1
• Upgrade the docker builder to alpine 3.15.0
• Use circleci as the main build tool

v5.4.1: Upgrade to php 7.4 (#7)

- Upgrade from php7.3-fpm-alpine to php7.4-fpm-alpine
- Refactor the build to produce both apache and php-fpm-alpine images (+ upgrade to docker 19.03.8 + huge code review)
- Improve README.md with shields.io images