Add a Dockerfile and compose to help run tests

Author: daronco

.gitignore

@@ -5,4 +5,5 @@ features/config.yml
 logs/bbb.log
 rdoc/
 logs/*
-.bundle/
+.bundle/
+.volumes/

Dockerfile

@@ -0,0 +1,13 @@
+FROM ruby:2.3.8
+
+ENV app /usr/src/app
+
+# Create app directory
+RUN mkdir -p $app
+WORKDIR $app
+
+# Bundle app source
+COPY . $app
+
+# Install app dependencies
+RUN bundle install

docker-compose.yml

@@ -0,0 +1,10 @@
+version: '2'
+services:
+
+  test:
+    build: .
+    tty: true
+    volumes:
+      - $PWD:/usr/src/app
+      - .volumes/bundle/:/usr/local/bundle
+    command: bundle exec rake