Test with cron job

Author: sofstam

.github/workflows/build_dockerfile_on_release.yml

@@ -1,7 +1,7 @@
 name: Update docker for artic-ncov2019-illumina
 on:
  schedule:
-  - cron: '00 11,16:22 * * *'
+  - cron: '*/30 * * * *'
 
 # release:
 #  types: