Dockerfile

@@ -1,4 +1,4 @@
-FROM php:8.1-cli-bookworm
+FROM php:7.4.7-cli-buster
 
 RUN apt-get update && apt-get install -y unzip
 RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

composer.json

@@ -5,12 +5,12 @@
   "license": "GNU GPL 3.0",
   "require": {
     "vlucas/phpdotenv": "^5.5",
-    "symfony/console": "^6.3",
+    "symfony/console": "^5.4",
     "phpmailer/phpmailer": "^6.8",
-    "cocur/slugify": "^4.5"
+    "cocur/slugify": "^4.3"
   },
   "require-dev": {
-    "phpunit/phpunit": "^10.3",
+    "phpunit/phpunit": "^9.6",
     "phpstan/phpstan": "^1.10"
   },
   "autoload": {