Carton does not detect requirement of Net::DNS

[KES777]

The problem described here

[XiaoyiChai]

Got stuck by this issue at Docker and solved it on my environment.

My env:

Docker Engine Ver: 19.03.8
Base Image: ubuntu:14.04
Perl version: 5.16.3

Got below error msgs when running carton install --deployment. And same error msg at carton install.

Reason causes this on my environment is,
Docker image ubuntu:14.04 does not have package dnsutils installed as default.
Error msg disappeared after apt-get install -y dnsutils

Not sure this helps you or not. 🤔