DEV-154 use latest docker image

.gitlab-ci.yml

 build:
-  image: docker:20.10.16
+  image: docker:latest
   stage: build
   services:
-    - docker:20.10.16-dind
+    - docker:latest-dind
   script:
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
     - docker build -t $CI_COMMIT_BRANCH.$CI_COMMIT_TIMESTAMP .