diff --git a/Dockerfile b/Dockerfile
index 35c20085..b5bc7242 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,4 +17,4 @@ RUN mkdir -p data/config && \
     php index.php && \
     ./vendor/bin/phpunit --configuration tests/phpunit.xml --coverage-text && \
     rm -rf data
-CMD ["/usr/bin/php", "-d", "upload_max_filesize=50M", "-d", "post_max_size=50M", "-S", "0.0.0.0:8000", "tests/router.php"]
+CMD "/app/tests/docker-init.sh"
diff --git a/tests/docker-init.sh b/tests/docker-init.sh
new file mode 100644
index 00000000..09ce87e3
--- /dev/null
+++ b/tests/docker-init.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+echo "<?php define(\"DATABASE_DSN\", \"${DB_DSN}\");" > data/config/auto_install.conf.php
+/usr/bin/php -d upload_max_filesize=50M -d post_max_size=50M -S 0.0.0.0:8000 tests/router.php