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minikube/site/content/en/docs/Contributing/gvisor.md

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---
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linkTitle: "gVisor"
title: "Releasing a gVisor image"
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date: 2019-09-25
weight: 10
---
## Prerequisites
* Credentials for `gcr.io/k8s-minikube`
* Docker
* Gcloud
## Background
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gVisor support within minikube requires a special Docker image to be generated. After merging changes to `cmd/gvisor` or `pkg/gvisor`, this image will need to be updated.
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The image is located at `gcr.io/k8s-minikube/gvisor-addon`
## Why is this image required?
`gvisor` requires changes to the guest VM in order to function. The `addons` feature in minikube does not normally allow for this, so to workaround it, a custom docker image is launched, containing a binary that makes the changes.
## What does the image do?
- Creates log directories
- Downloads and installs the latest stable `gvisor-containerd-shim` release
- Updates the containerd configuration
- Restarts containerd and rpc-statd
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## Updating the gVisor image
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`make push-gvisor-addon-image`