diff --git a/build/docker_install.sh b/build/docker_install.sh
index d2e3ead8..e2bdfa21 100644
--- a/build/docker_install.sh
+++ b/build/docker_install.sh
@@ -7,8 +7,15 @@ set -xe
 
 # Install git (the php image doesn't have it) which is required by composer
 apt-get update -yqq
-apt-get install git unzip -yqq
+apt-get install git unzip libfreetype6 libjpeg62-turbo libmcrypt4 libpng12-0 sendmail -yqq
 
 # Install phpunit, the tool that we will use for testing
 curl -Lo /usr/local/bin/phpunit https://phar.phpunit.de/phpunit.phar
-chmod +x /usr/local/bin/phpunit
\ No newline at end of file
+chmod +x /usr/local/bin/phpunit
+
+# Install gd
+docker-php-ext-configure gd --enable-gd-native-ttf --with-jpeg-dir=/usr/lib/x86_64-linux-gnu --with-png-dir=/usr/lib/x86_64-linux-gnu --with-freetype-dir=/usr/lib/x86_64-linux-gnu
+docker-php-ext-install gd
+docker-php-ext-install mcrypt
+docker-php-ext-install mbstring
+docker-php-ext-install zip
\ No newline at end of file