Docs: add tip for Kubernetes executor using dind
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@ -142,9 +142,12 @@ In order to do that, follow the steps:
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# The 'docker' hostname is the alias of the service container as described at
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# https://docs.gitlab.com/ee/ci/docker/using_docker_images.html#accessing-the-services
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#
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# Note that if you're using Kubernetes executor, the variable should be set to
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# tcp://localhost:2375 because of how Kubernetes executor connects services
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# Note that if you're using the Kubernetes executor, the variable should be set to
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# tcp://localhost:2375/ because of how the Kubernetes executor connects services
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# to the job container
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# DOCKER_HOST: tcp://localhost:2375/
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#
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# For non-Kubernetes executors, we use tcp://docker:2375/
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DOCKER_HOST: tcp://docker:2375/
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# When using dind, it's wise to use the overlayfs driver for
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# improved performance.
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