Cannot install `@vscode/vsce-sign` in Alpine Linux container

[nametable]

Same error as #1055

I don't think that issue every truly got resolved.

In vsce-sign, the postinstall checks the target. I think there is a mismatch between the computed target and nodes os.platform()

In https://www.npmjs.com/package/@vscode/vsce-sign?activeTab=code
target.js file does a check for alpine

But in node, os.platform() is linux, not alpine

My current workaround is to do the following:

sed -i 's/^ID=alpine$/ID=notpine/' /etc/os-release