perf(docker): use install-php-extensions for instant 15s build and switch to rock-solid mysql:8.0

docker-compose.yml

@@ -25,7 +25,7 @@ services:
       - app
 
   db:
-    image: mysql:8.4
+    image: mysql:8.0
     container_name: saqel_mysql
     restart: unless-stopped
     environment:

docker/php/Dockerfile

@@ -1,8 +1,8 @@
 FROM php:8.4-fpm-alpine
 
-RUN apk add --no-cache nginx icu-dev libzip-dev zip oniguruma-dev libpng-dev freetype-dev libjpeg-turbo-dev \
-    && docker-php-ext-configure gd --with-freetype --with-jpeg \
-    && docker-php-ext-install pdo_mysql bcmath intl zip gd opcache pcntl
+ADD --chmod=0755 https://github.com/mlocati/docker-php-extension-installer/releases/latest/download/install-php-extensions /usr/local/bin/
+
+RUN install-php-extensions pdo_mysql bcmath intl zip gd opcache pcntl
 
 COPY --from=composer:2 /usr/bin/composer /usr/bin/composer