You can use a shared runner to build and deploy a site. Note that you don't deploy a site to a runner. The runner is a temporary container dedicated to your pipeline, so you use it as an environment to run your build/deploy commands.
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Are Shared runners only for testing purpose or , can we deploy some react site to it
You can use a shared runner to build and deploy a site. Note that you don't deploy a site to a runner. The runner is a temporary container dedicated to your pipeline, so you use it as an environment to run your build/deploy commands.