In T625 / D756 / f9e81e6d5fec, decision was to maintain in // two images,
one for PHP 5.6, one for PHP 7.1.
This choice doesn't seem interesting for PHP 8 as:
- Docker tags allow to select a precise version
- The Docker Hub build rules now allow to create a 1.2.3-novolume tag
- The nasqueron/php-cli image works just fine
It simplifies the maintenance operations and would avoid to have 4 images,
one for PHP CLI, three for nginx-php7-fpm.
To weld the repositories together, this change merges the docker-nginx-php7-fpm
main branch in this main branch.