Mismatching node and npm versions

[csillag]

The latest Meteor 1.7.1 - beta versions use node v8.11.3 paired with npm 6.1.0.

However, there is no alpine-node build matching that configuration, so the scripts end up pulling the one with node 8.11.3, (npm 5.10.0, yarn 1.7.0)

The "old" npm 5.10.0 works find most of the time, except when it runs into the "write after the end" issue, see here: npm/npm#19989
This bug has been fixed in npm 6.1.0, that's why Meteor 1.7.1 will ship with it...
... but this makes minimeteor builds unstable.

Do you have an idea about solving this?

Thank you.

ps. I have already modified my instance of the minimeteor script to use the correct NPM version for installing dependencies before the Meteor build itself; the problem I see now is the second phase, the Alpine build..