config.yml in routemaster-drain-3.7.0

- old
+ new

@@ -1,11 +1,10 @@
 # To update the build configuration, edit the "builds" array below and run:
 # erb .circleci/config.yml.erb > .circleci/config.yml
 
 version: 2
 jobs:
-
   build_2.5_rails_5:
     docker:
       - image: circleci/ruby:2.4.1
       - image: redis:3-alpine
     steps:
@@ -17,13 +16,13 @@
             gem install bundler -v '~> 1.17' ;
             bundle config --local gemfile $PWD/gemfiles/rails_5.gemfile
 
       - restore_cache:
           keys: 
-            - v2-bundle-2.5.0-rails_5-{{ .Branch }}
-            - v2-bundle-2.5.0-rails_5
-            - v2-bundle-2.5.0
+            - v3-bundle-2.5.0-rails_5-{{ .Branch }}
+            - v3-bundle-2.5.0-rails_5
+            - v3-bundle-2.5.0
 
       - run: 
           name: Install dependencies
           command: |
             bundle install --jobs=3 --retry=3 --path=$PWD/vendor/bundle
@@ -34,24 +33,67 @@
             unset RACK_ENV &&
             unset RAILS_ENV &&
             bundle exec rspec
 
       - save_cache:
-          key: v2-bundle-2.5.0-rails_5-{{ .Branch }}
+          key: v3-bundle-2.5.0-rails_5-{{ .Branch }}
           paths:
             - ~/project/vendor/bundle
       - save_cache:
-          key: v2-bundle-2.5.0-rails_5
+          key: v3-bundle-2.5.0-rails_5
           paths:
             - ~/project/vendor/bundle
       - save_cache:
-          key: v2-bundle-2.5.0
+          key: v3-bundle-2.5.0
           paths:
             - ~/project/vendor/bundle
 
+  build_2.7_rails_6:
+    docker:
+      - image: circleci/ruby:2.7.4
+      - image: redis:6-alpine
+    steps:
+      - checkout
 
+      - run:
+          name: Install bundler
+          command: |
+            gem install bundler -v '~> 2' ;
+            bundle config --local gemfile $PWD/gemfiles/rails_6.gemfile
+
+      - restore_cache:
+          keys: 
+            - bundle-2.7.4-rails_6-{{ .Branch }}
+            - bundle-2.7.4-rails_6
+            - bundle-2.7.4
+
+      - run: 
+          name: Install dependencies
+          command: |
+            bundle install --jobs=3 --retry=3 --path=$PWD/vendor/bundle
+
+      - run:
+          name: Run test suite
+          command: |
+            unset RACK_ENV &&
+            unset RAILS_ENV &&
+            bundle exec rspec
+
+      - save_cache:
+          key: bundle-2.7.4-rails_6-{{ .Branch }}
+          paths:
+            - ~/project/vendor/bundle
+      - save_cache:
+          key: bundle-2.7.4-rails_6
+          paths:
+            - ~/project/vendor/bundle
+      - save_cache:
+          key: bundle-2.7.4
+          paths:
+            - ~/project/vendor/bundle
+
 workflows:
   version: 2
   test:
     jobs:
       - build_2.5_rails_5
-    
+      - build_2.7_rails_6