Dockerfile.alpine-2.1 in kommando-0.1.1

- old
+ new

@@ -1,9 +1,9 @@
 FROM ruby:2.1-alpine
 
 RUN apk add --no-cache \
   git build-base \
-  nano bash
+  nano
 
 WORKDIR /app
 
 COPY Gemfile Gemfile.lock kommando.gemspec ./
 COPY lib/kommando/version.rb ./lib/kommando/