diff --git a/docker/Dockerfile.test b/docker/Dockerfile.test
index 79bef840..61455275 100644
--- a/docker/Dockerfile.test
+++ b/docker/Dockerfile.test
@@ -1,11 +1,15 @@
+FROM busybox AS unpack
+WORKDIR /unpack
+COPY output.zip /unpack
+RUN unzip /unpack/output.zip
+
 FROM ghcr.io/openconext/openconext-basecontainers/php82-apache2:latest
 # Set the default workdir
 WORKDIR /var/www/html
-ADD output.zip /var/www/html/
+COPY --from=unpack /unpack/ /var/www/html/
 # Add the application configuration files
-RUN cp config/openconext/parameters.yaml.dist config/openconext/parameters.yaml
-# Add the config files for Apache2
-RUN rm -rf /etc/apache2/sites-enabled/*
+RUN cp config/openconext/parameters.yaml.dist config/openconext/parameters.yaml && \
+  rm -rf /etc/apache2/sites-enabled/*
 COPY ./docker/conf/webauthn-apache2.conf /etc/apache2/sites-enabled/webauthn.conf
 RUN rm -rf /var/www/html/var/cache/prod && \
   mkdir -p /var/www/html/var/ && \