Merge pull request docker#5734 from vvoland/gha-build-xbranches

gha/build: Publish bin image for release branches

Author: thaJeztah

.github/workflows/build.yml

@@ -22,6 +22,7 @@ on:
     branches:
       - 'master'
       - '[0-9]+.[0-9]+'
+      - '[0-9]+.x'
     tags:
       - 'v*'
   pull_request: