diff --git a/tests/docker/Dockerfile b/tests/docker/Dockerfile
index 87db779c..edd5914c 100644
--- a/tests/docker/Dockerfile
+++ b/tests/docker/Dockerfile
@@ -75,6 +75,7 @@ RUN useradd \
     && chown -R deployer:deployer ~deployer/.ssh \
     && chmod 700 ~deployer/.ssh \
     && chmod 600 ~deployer/.ssh/authorized_keys \
+    && usermod -a -G www-data deployer
 
 RUN useradd \
         --create-home \