Failed to create a build container

[Scott Little]

Brief Description
-----------------
stx-init-env --rebuild sometimes fails due to issues connecting to various software source that contribute to building of the build containers. This seems to be much more common in the early morning hours (~2 am EST).

Ideally, CENGN has a mirror of all of these inputs. Can we modify the Dockerfiles to pull from CENGN if the primary source is down or unreachable?

Severity
--------
Minor

Steps to Reproduce
------------------
stx-init-env --rebuild

Expected Behavior
------------------
Build containers created successfully

Actual Behavior
----------------
Failure to create build containers

Reproducibility
---------------
Intermittent, but rare <1%

System Configuration
--------------------
N/A

Branch/Pull Time/Commit
-----------------------
20221116T070000Z

Last Pass
---------
20221115T070000Z

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

02:15:38 + ./stx-init-env --rebuild
...
02:18:25 Successfully tagged stx-builder:jenkins-debian-master-v0.1.0
02:18:25 built image stx-builder:jenkins-debian-master-v0.1.0
02:18:25 Sending build context to Docker daemon 317.4kB

02:18:26 Step 1/19 : FROM debian:bullseye
...
02:20:35 Step 5/19 : RUN cd /tmp && wget http://snapshot.debian.org/archive/debian/20211128T160803Z/pool/main/d/debootstrap/debootstrap_1.0.126%2Bnmu1_all.deb && dpkg -i debootstrap_1.0.126+nmu1_all.deb
02:20:35 ---> Running in aa077b054066
02:20:35 --2022-11-16 07:20:32-- http://snapshot.debian.org/archive/debian/20211128T160803Z/pool/main/d/debootstrap/debootstrap_1.0.126%2Bnmu1_all.deb
02:20:35 Resolving snapshot.debian.org (snapshot.debian.org)... 193.62.202.27, 185.17.185.185, 2001:630:206:4000:1a1a:0:c13e:ca1b, ...
02:20:35 Connecting to snapshot.debian.org (snapshot.debian.org)|193.62.202.27|:80... connected.
02:21:43 HTTP request sent, awaiting response... 503 Backend fetch failed
02:21:43 2022-11-16 07:21:32 ERROR 503: Backend fetch failed.
02:21:43
02:21:43 The command '/bin/sh -c cd /tmp && wget http://snapshot.debian.org/archive/debian/20211128T160803Z/pool/main/d/debootstrap/debootstrap_1.0.126%2Bnmu1_all.deb && dpkg -i debootstrap_1.0.126+nmu1_all.deb' returned a non-zero code: 8

Test Activity
-------------
Build

Workaround
----------
retry stx-init-env after waiting for connectivity to the upstream source to been restored.