Fix #2

Author: zaporylie

master/Dockerfile

@@ -2,7 +2,11 @@ FROM drupaldocker/php:cli
 MAINTAINER drupal-docker
 
 ADD http://files.drush.org/drush.phar /usr/local/bin/drush
-RUN php /usr/local/bin/drush core-status -y && chmod a+x /usr/local/bin/drush
-RUN drush init -y
+
+RUN apt-get update && apt-get install -y mysql-client \
+  && chmod a+x /usr/local/bin/drush \
+  && /usr/local/bin/drush core-status -y \
+  && drush init -y \
+	&& rm -rf /var/lib/apt/lists/*
 
 CMD ["drush", "core-cli"]