CircleCI: add docker service

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

circle.yml

@@ -7,6 +7,8 @@ machine:
     - sudo rm -rf /usr/local/go
     - if [ ! -e go1.5.linux-amd64.tar.gz ]; then curl -o go1.5.linux-amd64.tar.gz https://storage.googleapis.com/golang/go1.5.linux-amd64.tar.gz; fi
     - sudo tar -C /usr/local -xzf go1.5.linux-amd64.tar.gz
+  services:
+    - docker
 
 dependencies:
   pre: