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docker executor

use of closed network connection

Docker image creation in CI job. Build kit enabled. 

The push refers to repository [gitlab.example.com:5050/xxx/yyy/zzz]
10c2aa743a1a: Waiting
ce6021a72f8a: Preparing
...
d7987a0357ee: Retrying in 5 seconds
d0de3ca27f7d: Retrying in 5 seconds
...
d0de3ca27f7d: Retrying in 19 seconds
698c6cbaebf1: Retrying in 19 seconds
...
...
698c6cbaebf1: Retrying in 1 second
b30c875acc0a: Retrying in 1 second
343b0b7537a2: Waiting
write tcp 192.168.0.138:58472->192.168.0.42:5050: use of closed network connection
Command exited with non-zero status 1
ERROR: Job failed: exit code 1

Gitlab's registry log file shows:

/var/log/gitlab/registry/current
level=warning msg="client disconnected during blob PATCH" copied=64136 43 error="unexpected EOF" go_version=go1.16.9 
level=error msg="connection reset by peer" code=CONNECTIONRESET detail="client disconnected" error="connectionreset: connection reset by peer" go_version=go1.16.9

Retrying job on the same runner also fails. Possible solution: remove cached image on runner host to force recreation of layers.