Using find instead of ** to locate Dockerfiles

[dkrotx]

./scripts/check-go-toolchain.sh recently started to use shopt globstar which is not always awailable in MacOS' old Bash

Fixing build on some laptops

The change' syntax should be recognized by early Bash versions
Just launched ./scripts/check-go-toolchain.sh

Potential risks

Release notes

Documentation Changes

[Groxx]

Can't run it right now, but yup - looks correct :)
Sorry about that, I apparently have my bash upgraded locally.

[coveralls]

Pull Request Test Coverage Report for Build 018fe4b0-a62c-4461-9a5b-807ba0e03a69

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 77 unchanged lines in 16 files lost coverage.
• Overall coverage decreased (-0.02%) to 70.174%

---

Files with Coverage Reduction	New Missed Lines	%
service/history/queue/timer_queue_processor_base.go	1	78.28%
common/task/weighted_round_robin_task_scheduler.go	2	89.05%
service/matching/tasklist/db.go	2	73.23%
common/task/fifo_task_scheduler.go	2	87.63%
service/matching/tasklist/task_writer.go	2	82.32%
service/history/execution/mutable_state_util.go	2	78.52%
common/log/tag/tags.go	3	50.46%
common/persistence/nosql/nosql_task_store.go	3	85.52%
service/history/task/fetcher.go	3	85.57%
common/types/history.go	4	45.35%

Totals
Change from base Build 018fe451-cd64-44f5-8cb8-8b9c6b71f4ba:	-0.02%
Covered Lines:	104524
Relevant Lines:	148950

---

💛 - Coveralls