CircleCI: use the Makefile

Author: Will Fleming

circle.yml

@@ -10,11 +10,11 @@ machine:
 
 dependencies:
   override:
-    - docker build -t=$PRIVATE_REGISTRY/$CIRCLE_PROJECT_REPONAME:b$CIRCLE_BUILD_NUM .
+    - echo "no-op"
 
 test:
   override:
-    - docker run $PRIVATE_REGISTRY/$CIRCLE_PROJECT_REPONAME:b$CIRCLE_BUILD_NUM bundle exec rake
+    - IMAGE_NAME="$PRIVATE_REGISTRY/$CIRCLE_PROJECT_REPONAME:b$CIRCLE_BUILD_NUM" make test
 
 deployment:
   registry: