diff --git a/build-container.sh b/build-container.sh
index 24b36b1..0695c0c 100755
--- a/build-container.sh
+++ b/build-container.sh
@@ -5,4 +5,5 @@ set -ex
 # Required, otherwise package building will fail.
 echo N | sudo tee /sys/module/overlay/parameters/metacopy
 
+docker pull drupal:8
 docker build --force-rm -t nathan/drupal8 -f Dockerfile build