Change docker image

Yuki Hisae · Yuki Hisae · commit 53c7919309fb · 2019-09-19T20:08:36.000+09:00
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -13,7 +13,7 @@ jobs:
   build:
     docker:
       # specify the version here
-      - image: circleci/elixir:1.9.1
+      - image: hisaway/circleci_elixir_clang8
         environment:
           MIX_ENV: test
       
