tl;dr: alpine docker foo is missing the ca-certificates.
the title makes it sound like a go problem while it is a problem of alpine.
What does this mean? If I don’t use docker, do I care?
If I don’t use docker, do I care?
No. It means the default Docker container that comes with a Go runtime can’t verify TLS requests out of the box, you need to install the ca-certificate package, or choose not to verify TLS