git: openjdk/jdk: 8297000: [jib] Add more friendly warning for proxy issues

[Erik Joelsson]

Changeset: 0d93ab9d
Author:    Ludvig Janiuk <lujaniuk at openjdk.org>
Committer: Erik Joelsson <erikj at openjdk.org>
Date:      2022-11-23 14:26:45 +0000
URL:       https://git.openjdk.org/jdk/commit/0d93ab9dff04409469faa26d5cdb29c4d6488537

8297000: [jib] Add more friendly warning for proxy issues

Reviewed-by: erikj, ihse

! bin/jib.sh