Failed to layered build while build-pkgs

[YU CHENGDE]

Brief Description
-----------------
In the process of building compiler layer. During executing build-pkgs, yum installroot failed due to forbidden to get repomd.xml.

Severity
--------
Minor

Steps to Reproduce
--------
follow the layered build document
https://docs.starlingx.io/developer_resources/layered_build_guide.html

Expected Behavior
------------------
Build compile-layered packages successful

Actual Behavior
----------------
Build compile-layered packages failed

Reproducibility
---------------
Always

Timestamp/Logs
--------------

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/tools/+/846573

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/tools/+/846573
Committed: https://opendev.org/starlingx/tools/commit/34247fdb364f399707422d8fe2d7ea91efe1f7dd
Submitter: "Zuul (22348)"
Branch: master

commit 34247fdb364f399707422d8fe2d7ea91efe1f7dd
Author: ChantYuCN <email address hidden>
Date: Mon Jun 20 06:26:26 2022 +0000

    fix: Add the variable no_proxy into dockerfile

    If set a http_proxy in container, it should add a no_proxy. Otherwise, system can't curl 127.0.0.1:443

    Closes-Bug: #1979174

    Signed-off-by: ChantYuCN <email address hidden>
    Change-Id: I0189171df6d955ffccd62d358ce38e556394f6ce