update composer

oem_application_dockerfile

@@ -20,7 +20,6 @@ USER root
 RUN apk --no-cache add \
     unzip \
     nodejs \
-    composer \
     && rm -rf /var/cache/apk/*
 
 RUN mkdir /etc/service/cron \
@@ -52,7 +51,7 @@ RUN wget https://github.com/open-event-manager/open-event-manager/archive/refs/t
     && tar --strip-components=1 -xvzf artifact.tar.gz
 
 RUN COMPOSER_MEMORY_LIMIT=-1 \
-    composer install \
+    php composer.phar install \
     --optimize-autoloader \
     --no-interaction \
     --no-progress