add base job

.gitlab-ci.yml

@@ -4,13 +4,17 @@ stages:
   - image
   - status-post
 
-build-go:
-  stage: build
-  image: apextoaster/golang:1.14
+.build-base:
+  image: apextoaster/base:1.3
   tags:
     - platform:k8s
     - runner:shared
 
+build-go:
+  extends:
+    - .build-base
+  stage: build
+  image: apextoaster/golang:1.14
   script:
     - time go build
     - time go test
@@ -28,13 +32,12 @@ build-go:
       - vendor
 
 build-image:
+  extends:
+    - .build-base
   stage: image
   image: apextoaster/docker:18.09
   services:
     - apextoaster/docker-dind:18.09
-  tags:
-    - platform:k8s
-    - runner:k8s
   dependencies:
     - build-go
   allow_failure: false