proxy.golang.org: problem with ppc64le builds while using docker/build-push-action

[jauderho]

What version of Go are you using (go version)?

$ go version
go version go1.17 

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
This problem applies only to ppc64le

What did you do?

While using the docker/build-push-action, I noticed that I am getting consistent but random errors while trying to build ppc64le images. I have my actions set up to build multi-platform builds but I only ever seem to get failures when trying to build ppc64le images.

I have an issue on my dockerfiles repo tracking this: jauderho/dockerfiles#69

For example, I try to build images for the following platforms: linux/amd64,linux/386,linux/arm64,linux/arm/v7,linux/arm/v6,linux/s390x,linux/ppc64le

linux/ppc64le is the only one that seems to consistently have errors.

Example:

• https://github.com/jauderho/dockerfiles/runs/4856366355?check_suite_focus=true#step:8:1306

What did you expect to see?

No errors

What did you see instead?

See https://github.com/jauderho/dockerfiles/runs/4856366355?check_suite_focus=true#step:8:1306

Errors of the form net/http: TLS handshake timeout

Link to the build history: https://github.com/jauderho/dockerfiles/actions/workflows/fq.yml

If I rerun the GHA, sometimes it'll magically resolve itself. I'd like to be able to consistently build linux/ppc64le images.

[seankhliao]

Duplicate of #50584