Merge pull request #43 from tnir/38-update-docker-to-17.09.0-ce

Use docker-17.09.0-ce for build

Author: tnir

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: docker:17.07.0-ce
+      - image: docker:17.09.0-ce
     steps:
       - checkout
       - setup_remote_docker