diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index db52a9f..cb0929f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,6 +8,7 @@ cache:
 test:7:
     before_script:
       - sh build/docker_install.sh > /dev/null
+      - apk add --no-cache php7-phpdbg
       - curl -sS https://getcomposer.org/installer | php
       - php composer.phar update
       - php composer.phar install
@@ -18,6 +19,7 @@ test:7:
 test:7.1:
     before_script:
       - sh build/docker_install.sh > /dev/null
+      - apk add --no-cache php7.1-phpdbg
       - curl -sS https://getcomposer.org/installer | php
       - php composer.phar update
       - php composer.phar install
diff --git a/build/docker_install.sh b/build/docker_install.sh
index c79a781..2c595f1 100644
--- a/build/docker_install.sh
+++ b/build/docker_install.sh
@@ -6,17 +6,14 @@
 set -xe
 
 # Install git (the php image doesn't have it) which is required by composer
+echo -e 'http://dl-cdn.alpinelinux.org/alpine/edge/main\nhttp://dl-cdn.alpinelinux.org/alpine/edge/community\nhttp://dl-cdn.alpinelinux.org/alpine/edge/testing' > /etc/apk/repositories
 apk upgrade --update && apk add --no-cache \
-	g++ \
-	make \
-	autoconf \
 	curl \
-	git \
-	phpdbg
+	git
 	
 # 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
+# curl -Lo /usr/local/bin/phpunit https://phar.phpunit.de/phpunit.phar
+# chmod +x /usr/local/bin/phpunit
 
 # Install extensions
 # Install xdebug for coverage report