Update Dockerfile

Author: alejandroSuch

Dockerfile

@@ -3,10 +3,8 @@ FROM alexsuch/angular-cli:base
 LABEL authors="Alejandro Such <alejandro.such@gmail.com> , Mihai Bob <mihai.m.bob@gmail.com>"
 
 RUN apk update \
-  && apk add --update alpine-sdk \
   && yarn global add @angular/cli@1.3.2 \
   && ng set --global packageManager=yarn \
-  && apk del alpine-sdk \
   && rm -rf /tmp/* /var/cache/apk/* *.tar.gz ~/.npm \
   && npm cache clear \
   && yarn cache clean \