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since the latest php fpm docker image update yesterday (https://hub.docker.com/_/php?tab=tags&page=1&name=fpm-alpine) my pipeline is broken because apparently PHP version 8 is installed instead of 7.4 as in my Dockerfile specified.

I am using this in my docker file:

FROM php:7.4-fpm-alpine AS ...

But according to my composer installs the container has PHP 8.0.13 running:

 Root composer.json requires php 7.4.26 but your php version (8.0.13) does not satisfy that requirement.

Anyone an idea what is going on here?

Answers

As Jeremy Brooks already mentioned, Alpine released version 3.15 where composer requires PHP 8 (https://pkgs.alpinelinux.org/package/v3.15/community/x86_64/composer). Instead of installing composer from getcomposer.org another solution is to use Alpine 3.14:

FROM php:7.4-fpm-alpine3.14 AS ...