diff --git a/Dockerfile b/Dockerfile
index 76d778d0e7cee7e996436285742f3e895d0ba8c8..53418945fcc4c2c134d6643a4ce338b3cd21e461 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,3 @@
-
 ARG REGISTRY_DOMAIN="docker.io/library"
 
 FROM python:3.9.12-slim-bullseye
@@ -65,7 +64,9 @@ WORKDIR /galaxy-central
 
 COPY tool/dummy.xml /galaxy-central/tool/dummy.xml
 
-RUN planemo test --galaxy_root galaxy tool/dummy.xml \
+WORKDIR /work
+
+RUN planemo test --galaxy_root /galaxy-central/galaxy /galaxy-central/tool/dummy.xml \
     && rm -rf tool*
 
 EXPOSE 9090