diff --git a/Dockerfile b/Dockerfile
index a47dade..cc99760 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,20 +1,16 @@
 FROM nikolaik/python-nodejs:python3.8-nodejs12
 
-# Install dependencies.
 ADD requirements.txt /requirements.txt
 ADD main.py /main.py
 ADD loc.py /loc.py
 ADD make_bar_graph.py /make_bar_graph.py
 ADD colors.json /colors.json
 ADD translation.json /translation.json
+
+ENV PATH "$PATH:/home/root/.npm-global/bin"
+
 RUN pip install -r requirements.txt
-
-ENV NPM_CONFIG_PREFIX=/home/node/.npm-global
-
 RUN npm -g config set user root
-
-RUN npm install -g vega@^5.19.1 
-
-RUN npm install -g vega-lite vega-cli canvas
+RUN npm i -g vega vega-lite vega-cli canvas
 
 ENTRYPOINT ["python", "/main.py"]