Fixed ci yaml sytax error

.gitlab-ci.yml

@@ -1,8 +1,5 @@
 image: docker:20.10.5
 
-tags:
-  - docker
-
 stages:
   - build
   - push
@@ -12,6 +9,8 @@ before_script:
 
 build:
   stage: build
+  tags:
+    - docker
   script:
     - docker pull $CI_REGISTRY_IMAGE:latest || true
     - docker build --cache-from $CI_REGISTRY_IMAGE:latest --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
@@ -20,6 +19,8 @@ build:
 # Tag the "master" branch as "latest"
 push latest:
   stage: push
+  tags:
+    - docker
   script:
     - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
     - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
@@ -30,6 +31,8 @@ push latest:
 # Docker tag any Git tag
 push tag:
   stage: push
+  tags:
+    - docker
   only:
     - tags
   script: