copy yarn.lock before yarn install

alexspence · rickr · commit 76b3dc852f50 · 2017-06-15T20:05:27.000-06:00
diff --git a/Dockerfile b/Dockerfile
@@ -9,6 +9,7 @@ WORKDIR /usr/src/app
 
 # Install app dependencies
 COPY package.json /usr/src/app/
+COPY yarn.lock /usr/src/app/
 RUN yarn install --no-progress
 
 # Bundle app source
