Merge pull request #1400 from nipreps/maint/post-docker-image-with-prs

MAINT: Execute ``deploy_docker`` with commits to master

Author: oesteban

.circleci/config.yml

@@ -855,6 +855,7 @@ workflows:
             - deploy_docker
           filters:
             branches:
-              ignore: /.*/
+              only:
+                - master
             tags:
               only: /.*/