docker環境でcomposer installした際、メモリエラーになる場合の対応。

PHP Fatal error:  Allowed memory size of 1610612736 bytes exhausted (tried to allocate 4096 bytes) in phar:///usr/bin/composer/src/Composer/DependencyResolver/Solver.php on line 223
Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 4096 bytes) in phar:///usr/bin/composer/src/Composer/DependencyResolver/Solver.php on line 223

COMPOSER_MEMORY_LIMIT=-1を追加してcomposer installを実行する。

COMPOSER_MEMORY_LIMIT=-1 composer install