Add WIP dockerfile

Author: iHiD

Dockerfile

@@ -0,0 +1,15 @@
+FROM ruby:2.5-alpine
+
+RUN apk update && apk upgrade && \
+    apk add --no-cache bash git openssh && \
+    apk add build-base gcc wget git
+
+RUN mkdir /opt/analyzer
+COPY -r . /opt/analyzer
+WORKDIR /opt/analyzer
+
+RUN git clone https://github.com/exercism/ruby-analyzer.git .
+
+RUN git checkout b42a07d9417e058557bff3039547f57fb87ce56e && bundle install >aa
+
+RUN bundle exec ruby manual_test.rb >bb