Balena releases will some times fail to build due to a HTTP timeout when trying to reach the docker registry.
Here are our build logs:
[Error] Some services failed to build:
[Error] Service: ...
[Error] Error: Get "https://registry-1.docker.io/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
...
[Info] Built on 9ffb677
[Error] Not deploying release.