Update csslint

Author: gdiggs

Dockerfile

@@ -5,10 +5,11 @@ COPY Gemfile /usr/src/app/
 COPY Gemfile.lock /usr/src/app/
 
 RUN apk --update add nodejs git ruby ruby-dev ruby-bundler less ruby-nokogiri build-base && \
-    npm install -g codeclimate/csslint.git#2a53712c61710840c023978418c7b48e3f32ac64 && \
     bundle install -j 4 && \
     apk del build-base && rm -fr /usr/share/ri
 
+RUN npm install -g codeclimate/csslint.git#7a3a6be
+
 RUN adduser -u 9000 -D app
 USER app