no verifica el instalador del composer

Dockerfile

@@ -4,7 +4,6 @@ EXPOSE 8000
 RUN apt-get update && apt-get install -yq python git wget vim tmux php-cli php-mysql php-curl graphviz php-amqplib php-xml php-zip
 
 RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-RUN php -r "if (hash_file('SHA384', 'composer-setup.php') === '669656bab3166a7aff8a7506b8cb2d1c292f042046c5a994c43155c0be6190fa0355160742ab2e1c88d40d5be660b410') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
 RUN php composer-setup.php --install-dir=/usr/local/bin --filename=composer
 RUN php -r "unlink('composer-setup.php');"