diff --git a/Dockerfile b/Dockerfile
index ef2333d..57deccf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,11 @@ RUN apt-get update && apt-get install libspatialindex-dev -y
 RUN conda install nomkl
 COPY . /usr/local/render-python-apps
 
+WORKDIR /shared/render-modules
+RUN pip install .
+WORKDIR /usr/local/render-python-apps
+
+
 #RUN git clone https://github.com/fcollman/render-python-apps
 #WORKDIR render-python-apps
 #RUN git pull && git checkout newrender
diff --git a/renderapps/transfer/move_stack.py b/renderapps/transfer/move_stack.py
index 134f02e..7a1d971 100644
--- a/renderapps/transfer/move_stack.py
+++ b/renderapps/transfer/move_stack.py
@@ -84,7 +84,7 @@ def transformURL(self, url):
             self.seen_urls.add(newurl)
 
         # Replace spaces with %20 -- may be needed for ImageJ url.open?
-        newurl.replace(" ", "%20")
+        newurl = newurl.replace(" ", "%20")
         return newurl
 
     def transform_ip(self, ip):