Repro steps:
Create private registry
Create a private registry, with SSL enabled using a certificate issued by an internal/private CA (e.g using mkcert)
Registry works for pushing/pulling images (certificate is trusted)
Exercise issue
In VSCode, right click on Registries\Private Registries in docker explorer.
Choose "Connect to a Private Registry … (Preview)
Enter "https://localhost:5443/"
Press enter to ignore username
Action: vscode-docker.connectCustomRegistry
Error type: RequestError
Error Message: Error: unable to verify the first certificate
Version: 0.3.1
OS: win32