Release 23.08.1

Release 23.08.1

Main changes:

• hook scripts env.rc, push and post_push have been updated
• handling of multiple deployment tags per image has been improved and it covers also publishing into the builder repository now
  • also less image pollution by publishing
• file readme-local-building-example.md got a new section Tips and examples, containing
  • How to deploy all images into one repository
• fix in ci-builder.sh help mode
• readme files updated