docker buildx push it's not working for insecure registry

[fjglira]

Hi, I'm trying to use docker buildx --push to build for multi arch and push to a insecure https registry, this is my example:

docker buildx create --name project-v4-builder --driver-opt network=host --config buildkitd.toml

The content of the config file it's something like this:

insecure-entitlements = [ "network.host", "security.insecure" ]
[registry."https://url_here"]
    http = false
    insecure = true

I run using this command:
docker buildx build --push --platform=linux/arm64,linux/amd64,linux/s390x,linux/ppc64le --tag tag_here -f Dockerfile.cross .

But I'm getting tls: failed to verify certificate: x509: certificate signed by unknown authority. btw I also have the insecure registry configured in my daemon.json file