Update Dockerfile to include cspell as the spell checker for istio.io

[Ajay-singh1]

Related issue:- Issue

[istio-testing]

Hi @Ajay-singh1. Thanks for your PR.

I'm waiting for a istio member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[Ajay-singh1]

@howardjohn @dhawton

[howardjohn]

/ok-to-test

[Ajay-singh1]

@craigbox @howardjohn @dhawton I need your approval here.

[craigbox]

Because of the way the scripts work, you're going to end up with a container that has cspell and a script that calls mdspell. Until the change is merged in istio/istio.io, I would recommend we install both.

[Ajay-singh1]

/retest

[Ajay-singh1]

@craigbox We can cleanly merge this PR now.

[craigbox]

I encourage you to make the changes for the linter in this PR also, as it takes a while for these to filter through to the other environments.

[Ajay-singh1]

@craigbox I have included the changes for the linter.I did forgot to add a v so the tool is not getting pulled by the container and the checks were failing now it will work fine.

[craigbox]

Ah, right, I see that came through now in #3155.