Adicione a nova versao do ruby no Dockerfile para rodar no mer servidor

Dockerfile

@@ -2,7 +2,7 @@
 # docker run --rm -p 8081:80 registry.melvans.com:5000/rottenpotatoes
 # docker stop rottenpotatoes && docker rm rottenpotatoes
 # docker run -d --name rottenpotatoes  --network=basicserver_default --restart=always -e VIRTUAL_HOST=rottenpotatoes.melvans.com registry.melvans.com:5000/rottenpotatoes
-FROM ruby:2.3.0
+FROM ruby:2.3.3
 RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
 RUN mkdir /myapp
 WORKDIR /myapp