feat: composer-unused in php8-review image

Author: mhitza

Dockerfile.php8-review

@@ -16,4 +16,7 @@ RUN mv /opt/bin/reviewdog /usr/local/bin
 # add php-tools to search path
 RUN echo "export PATH=$PATH:/opt/php-tools/bin" >> /root/.bashrc
 
+RUN composer global require icanhazstring/composer-unused \
+  && ln -s /root/.config/composer/vendor/bin/composer-unused /usr/local/bin/composer-unused
+
 ENTRYPOINT ["apache2-foreground"]