diff --git a/build/docker_install.sh b/build/docker_install.sh
new file mode 100644
index 0000000..e7b4a8d
--- /dev/null
+++ b/build/docker_install.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# We need to install dependencies only for Docker
+[[ ! -e /.dockerenv ]] && [[ ! -e /.dockerinit ]] && exit 0
+
+# Where am I?
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+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 \
+	libfreetype6 \
+	libjpeg62-turbo \
+	libmcrypt4 \
+	libpng12-0 \
+	libfreetype6-dev \
+	libjpeg-dev \
+	libmcrypt-dev \
+	libpng12-dev \
+	libxslt1-dev \
+	libxslt1.1 \
+	zlib1g-dev \
+	-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 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 xsl
+docker-php-ext-install zip
\ No newline at end of file