Try to fix the path correctly for cloning

Dockerfile

@@ -5,8 +5,6 @@ FROM node:8-stretch
 
 ENV NODE_ENV production
 
-WORKDIR /usr/src/app
-
 COPY . ${WORKDIR}
 
 RUN apt-get update && \
@@ -19,9 +17,12 @@ RUN apt-get update && \
     libtool \
     m4
 
-RUN git clone https://github.com/beakerbrowser/homebase /usr/src/app && \
+RUN \
+  git clone https://github.com/beakerbrowser/homebase /usr/src/app && \
   git checkout 474976ff9e839e06c37a83625fe0832fc26fefa1
 
+WORKDIR /usr/src/app
+
 RUN npm install --only=production
 RUN npm install pm2@4.2.3 -g