Added workaround for alibi explainer image build

[axsaucedo]

Provides a temporary workaround for #2767

This will be a required cherrypick for 1.5.1 release once it's merged

[seldondev]

Fri Dec 11 15:39:38 UTC 2020
The logs for [pr-build] [1] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2768/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2768 --build=1

[seldondev]

Fri Dec 11 15:40:00 UTC 2020
The logs for [lint] [2] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2768/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2768 --build=2

[axsaucedo]

/test integration

[seldondev]

Fri Dec 11 15:49:01 UTC 2020
The logs for [integration] [3] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2768/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2768 --build=3

[ukclivecox]

/approve

[seldondev]

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