ci: update Dockerfile to latest alpine image

.stylelintrc.json

 {
-  "extends": "stylelint-config-recommended",
+  "extends": "stylelint-config-standard",
   "rules": {
     "at-rule-no-unknown": [
       true,

docker/ci/Dockerfile

@@ -4,7 +4,7 @@
 # ⚠️ NOT optimized for production
 # should be used only for continuous integration
 #---------------------------------------------------
-FROM php:8.1-fpm-alpine3.17
+FROM php:8.1-fpm-alpine3.18
 
 LABEL maintainer="Yassine Doghri <yassine@doghri.fr>"