Fix broken link in docker readme

[ravicodelabs]

Description

This is a fix of a broken link in the docker readme. In particular, the third bullet under the "Principles" heading links to [lite/build.sh](https://github.com/vitessio/vitess/blob/main/docker/lite/build.sh, which does not exist, and is therefore substituted with another build.sh file link that works.

Related Issue(s)

Fixes #14221

Checklist

• "Backport to:" labels have been added if this change should be back-ported
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on the CI
• Documentation was added or is not required

[frouioui]

This looks good to me, thank you! However, the DCO check is failing, can you please amend your commit and sign it.

[ravicodelabs]

This looks good to me, thank you! However, the DCO check is failing, can you please amend your commit and sign it.

Done!

[frouioui]

Hey @ravicodelabs it seems like the DCO check is still failing. Please follow the instructions on https://github.com/vitessio/vitess/pull/14222/checks?check_run_id=17579049266.

[ravicodelabs]

Hi @frouioui, sorry for the back and forth! I've added the Signed-off-by line as well, so hopefully it should go through this time.

[frouioui]

Hi @frouioui, sorry for the back and forth! I've added the Signed-off-by line as well, so hopefully it should go through this time.

It went through! Thank you 🙏🏻 We will get you a second review, and then we can merge this.

[frouioui]

I force pushed to your branch @ravicodelabs to re-trigger CI as it was stuck for some reason.

[frouioui]

Done @ravicodelabs, thank you for your contribution! 🚀