Attempt tests without redis for now

build/docker_install.sh

@@ -7,14 +7,8 @@ set -xe
 
 # Install git (the php image doesn't have it) which is required by composer
 apt-get update -yqq
-apt-get install git libsqlite3-dev -yqq
+apt-get install git -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
-
-# Install mysql driver
-# Here you can install any other extension that you need
-docker-php-ext-install pdo_sqlite
-pecl install redis
-docker-php-ext-enable redis
+chmod +x /usr/local/bin/phpunit