diff --git a/Dockerfile b/Dockerfile
index 4c5b95e..a21e8ac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,20 +18,23 @@ WORKDIR /usr/src/app
 RUN --mount=type=bind,source=requirements.txt,target=/tmp/requirements.txt \
     pip install --no-cache-dir --requirement /tmp/requirements.txt
 
+# change ownership of working directory
+RUN chown -R survBot:survBot /usr/src/app
+
 # switch to user survBot
 USER survBot
 
 # copy application files
-COPY survBot.py utils.py write_utils.py LICENSE README.md ./
+COPY --chown=survBot:survBot survBot.py utils.py write_utils.py LICENSE README.md ./
 
 # copy configuration files
 VOLUME /usr/src/app/conf
-COPY parameters.yaml mailing_list.yaml simulate_fail.json conf/
+COPY --chown=survBot:survBot parameters.yaml mailing_list.yam[l] simulate_fail.jso[n] conf/
 RUN ln -s conf/simulate_fail.json simulate_fail.json
 
 # copy www files
 VOLUME /usr/src/app/www
-COPY logo.png stylesheets/desktop.css stylesheets/mobile.css www/
+COPY --chown=survBot:survBot logo.pn[g] stylesheets/desktop.css stylesheets/mobile.css www/
 RUN ln -s www/index.html survBot_out.html
 
 # run the application