diff --git a/Dockerfile b/Dockerfile
index 93a4453..ffcf5a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,8 +5,7 @@ WORKDIR /app
 
 RUN apt update && apt install -y git zip unzip
 
-RUN php -r "copy('https://getcomposer.org/download/2.1.12/composer.phar', 'composer.phar');" \
- && chmod +x ./composer.phar \
- && ./composer.phar install
+COPY --from=composer:2.5.5 /usr/bin/composer /usr/bin/composer
+RUN composer install -n --no-dev
 
 ENTRYPOINT ["/app/entrypoint.sh"]