Update Dockerfile

Author: alejandroSuch

Dockerfile

@@ -4,8 +4,10 @@ LABEL author="Alejandro Such <alejandro.such@gmail.com>"
 
 RUN apk update \
   && apk add --update alpine-sdk \
-  && apk add bash \
   && npm install -g @angular/cli@1.0.0-beta.32.3 \
+  && npm install -g yarn \
+  && ng set --global packageManager=yarn \
   && apk del alpine-sdk \
   && rm -rf /tmp/* /var/cache/apk/* *.tar.gz ~/.npm \
-  && npm cache clear
+  && npm cache clear \
+  && sed -i -e "s/bin\/ash/bin\/sh/" /etc/passwd