Dockerfile in pbmenv-0.1.1 vs Dockerfile in pbmenv-0.1.2

@@ -1,6 +1,6 @@
 FROM ruby:2.5
 
 WORKDIR /pbmenv
 
 ADD docker/Gemfile .
-RUN gem i bundler && bundle install
+RUN apt-get update && apt-get install vim && gem i bundler && bundle install