gitlab-ci: run builds and linting in same stage

.gitlab-ci.yml

 stages:
-  - lint
-  - build
+  - verify
 
 variables:
   GIT_STRATEGY: clone
   GIT_DEPTH: "500"
 
 lint:
-  stage: lint
+  stage: verify
   image: alpinelinux/apkbuild-lint-tools:latest
   interruptible: true
   script:
@@ -20,7 +19,7 @@ lint:
     - x86_64
 
 .build:
-  stage: build
+  stage: verify
   image: alpinelinux/alpine-gitlab-ci:latest
   interruptible: true
   script: