Add some cleanup in docker executor
What does this MR do?
Adds some additional cleanup in docker.go file.
Why was this MR needed?
Are there points in the code the reviewer needs to double check?
Extracted from !1801 (merged) (it should not have any common stuff now) and built on top of !1851 (merged) (which is the base of this MR).
Does this MR meet the acceptance criteria?
-
Documentation created/updated -
Added tests for this feature/bug -
In case of conflicts with master- branch was rebased