Run docker builds on MR CI

.gitlab-ci.yml

@@ -121,13 +121,6 @@ backend-build:
     DOCKER_DRIVER: overlay2
     DOCKER_HOST: tcp://docker:2375/
 
-  # Run this on master and tags except base tags
-  rules:
-    - if: '$CI_COMMIT_BRANCH == "master"'
-      when: on_success
-    - if: '$CI_COMMIT_TAG && $CI_COMMIT_TAG !~ /^base-.*/'
-      when: on_success
-    - when: never
 
   script:
     - ci/build.sh Dockerfile
@@ -141,13 +134,6 @@ backend-build-binary:
     DOCKER_DRIVER: overlay2
     DOCKER_HOST: tcp://docker:2375/
 
-  # Run this on master and tags except base tags
-  rules:
-    - if: '$CI_COMMIT_BRANCH == "master"'
-      when: on_success
-    - if: '$CI_COMMIT_TAG && $CI_COMMIT_TAG !~ /^base-.*/'
-      when: on_success
-    - when: never
 
   script:
     - ci/build.sh Dockerfile.binary "-binary"