update: use recommended way to handle yarn

ref: yarnpkg/yarn#749
jeanycyang · Mar 30, 2018 · 718e53c · 718e53c
1 parent 9314a06
commit 718e53c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -3,10 +3,10 @@ MAINTAINER jeanycyang
 
 RUN mkdir -p /var/www/app
 WORKDIR /var/www/app
-COPY ./package.json /var/www/app
+COPY ./package.json ./yarn.lock /var/www/app/
 
 # RUN apk --update --no-cache --virtual dev-dependencies add git python make g++
-RUN yarn
+RUN yarn --pure-lockfile
 
 COPY . /var/www/app
 RUN npm run build