.travis.yml in dynamoid-1.3.4 vs .travis.yml in dynamoid-2.0.0

@@ -1,31 +1,56 @@
+sudo: required
+
 language: ruby
 rvm:
   - ruby-2.0.0-p648
   - ruby-2.1.10
   - ruby-2.2.7
   - ruby-2.3.4
   - ruby-2.4.1
   - jruby-9.1.9.0
 gemfile:
+gemfile:
   - gemfiles/rails_4_0.gemfile
   - gemfiles/rails_4_1.gemfile
   - gemfiles/rails_4_2.gemfile
   - gemfiles/rails_5_0.gemfile
+  - gemfiles/rails_5_1.gemfile
 matrix:
   exclude:
     - rvm: ruby-2.0.0-p648
       gemfile: gemfiles/rails_5_0.gemfile
+    - rvm: ruby-2.0.0-p648
+      gemfile: gemfiles/rails_5_1.gemfile
     - rvm: ruby-2.1.10
       gemfile: gemfiles/rails_5_0.gemfile
+    - rvm: ruby-2.1.10
+      gemfile: gemfiles/rails_5_1.gemfile
     - rvm: ruby-2.4.1
       gemfile: gemfiles/rails_4_0.gemfile
     - rvm: ruby-2.4.1
       gemfile: gemfiles/rails_4_1.gemfile
-before_install: gem install bundler -v 1.15.4
-install:
-  - wget http://dynamodb-local.s3-website-us-west-2.amazonaws.com/dynamodb_local_latest.zip --quiet -O spec/dynamodb_temp.zip
-  - unzip -qq spec/dynamodb_temp.zip -d spec/DynamoDBLocal-latest
-  - rm spec/dynamodb_temp.zip
-script:
+
+### BUILD LIFECYCLE STEPS ###
+
+before_install:
+  # Debugging: Print out the current docker-compose version.
+  - docker-compose --version
+
+  # If one of your containers does not build for
+  # whatever reason it's best to report that now before your tests start
+  # otherwise it can be really tricky to debug why tests are failing sometimes.
+  - docker ps
+
+after_install:
+  - gem install bundler -v 1.15.4
   - bundle install
-  - bundle exec rake unattended_spec
+
+before_script:
+  # Start Docker Compose as a daemon
+  - docker-compose up -d
+
+script:
+  - bundle exec rake spec
+
+after_script:
+  - docker-compose down