diff --git a/Dockerfile b/Dockerfile
index a0cca64..961e537 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,14 @@
 FROM ubuntu:16.04
 
 # Install yarn
-RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
-RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
+RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
+RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
 RUN apt-get update && apt-get install yarn git
 
 RUN git clone https://github.com/ffrgb/meshviewer.git /opt/meshviewer/ && cd /opt/meshviewer
 RUN yarn
 RUN yarn global add gulp-cli
 RUN gulp
+
+WORKDIR /opt/meshviewer
+EXPOSE 80