docs: describe containerset retrystrategy and verify it works. Fixes: #11502 #21021
| Job | Run time |
|---|---|
| 6s | |
| 29s | |
| 4m 17s | |
| 4m 53s | |
| 6m 4s | |
| 3m 42s | |
| 0s | |
| 1s | |
| 6m 1s | |
| 1s | |
| 5m 58s | |
| 5m 57s | |
| 3m 42s | |
| 1m 0s | |
| 1s | |
| 1s | |
| 1s | |
| 1s | |
| 1m 1s | |
| 1s | |
| 1s | |
| 43m 18s |
| Job | Run time |
|---|---|
| 6s | |
| 29s | |
| 4m 17s | |
| 4m 53s | |
| 6m 4s | |
| 3m 42s | |
| 0s | |
| 1s | |
| 6m 1s | |
| 1s | |
| 5m 58s | |
| 5m 57s | |
| 3m 42s | |
| 1m 0s | |
| 1s | |
| 1s | |
| 1s | |
| 1s | |
| 1m 1s | |
| 1s | |
| 1s | |
| 43m 18s |