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uses kaniko executor instead of dind to build docker image

Chris Huang requested to merge chrishua/handbook:fix/failing-dnd-build-handsonlab8 into main
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Why is this change being made?

I tried following the currently published hands-on lab instructions to build a container image. The build would always error out with the error message:

ERROR: Cannot connect to the Docker daemon at tcp://docker:2375. Is the docker daemon running?

This change modifies the pipeline to use the kaniko executor to build the image as described here: Building a docker image with kaniko

Author and Reviewer Checklist

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  • Confirmed that this update should be in the internal handbook rather than public handbook, per the SAFE framework
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Edited by Chris Huang

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