Failed to push image,Error:x509: certificate signed by unknown authority

The version information is as follows
buildkit v0.12.1

The content of my buildkitd.toml file is as follows

debug = true
[registry."local-repository.com"]
  insecure = true
  ca=["/etc/config/ca.crt"]
  [[registry."local-repository".keypair]]
    key="/etc/config/local-repository.com.key"
    cert="/etc/config/local-repository.com.cert"

Execute the command as follows
buildctl build --frontend=dockerfile.v0 --local context=. --local dockerfile=. --output type=image,name=local-repository.com/base/myapp,push=true,registry.insecure=true

The error message is as follows
error: failed to solve: failed to push local-repository.com/base/myapp: failed to do request: Head "https://local-repository.com/v2/base/myapp/blobs/sha256:2d473b07cdd5f0912cd6f1a703352c82b512407db6b05b43f2553732b55df3bc": tls: failed to verify certificate: x509: certificate signed by unknown authority

When I configure certificate trust at the operating system level, it is ok, but using the buildkitd.toml file returns the above error.
I wonder if there is something wrong with my configuration file or the command line,my certificate is self-signed

Start with the reported buildkitd.toml registry configuration and the buildctl command, checking how the registry hostname, CA path, and keypair settings are interpreted for the push. Reproduce with the self-signed certificate and confirm that the configured CA is honored without OS-level trust, with a successful image push as the done condition.