correct Docker file to install laravel horizon

Dockerfile

@@ -5,7 +5,7 @@ FROM cylab/php74 AS composer
 COPY . /var/www/html
 WORKDIR /var/www/html
 # RUN composer install --no-dev --optimize-autoloader
-RUN composer install --optimize-autoloader
+RUN composer install --optimize-autoloader --ignore-platform-reqs
 # RUN pecl install redis && docker-php-ext-enable redis
 
 #### Step 2 : node