build: makes sure all builds use the latest container.

.circleci/config.yml

@@ -127,7 +127,7 @@ jobs:
 
   build-all:
     docker:
-     - image: grafana/build-container:1.2.1
+     - image: grafana/build-container:1.2.2
     working_directory: /go/src/github.com/grafana/grafana
     steps:
       - checkout
@@ -244,7 +244,7 @@ jobs:
 
   build-enterprise:
     docker:
-     - image: grafana/build-container:1.2.1
+     - image: grafana/build-container:1.2.2
     working_directory: /go/src/github.com/grafana/grafana
     steps:
       - checkout
@@ -276,7 +276,7 @@ jobs:
 
   build-all-enterprise:
     docker:
-    - image: grafana/build-container:1.2.1
+    - image: grafana/build-container:1.2.2
     working_directory: /go/src/github.com/grafana/grafana
     steps:
     - checkout