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add readme for rootless

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yukang 2021-10-18 18:39:47 +08:00
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README.md
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@ -100,6 +100,7 @@ $ ./youki -h # you can get information about youki command
## Tutorial
### Create and run a container
Let's try to run a container that executes `sleep 30` with youki. This tutorial may need root permission.
```console
@ -144,6 +145,20 @@ $ sudo ./youki delete tutorial_container # delete the container
Change the command to be executed in `config.json` and try something other than `sleep 30`.
### Rootless container
`youki` provides the ability to run containers as non-root user([rootless mode](https://docs.docker.com/engine/security/rootless/)). To run a container in rootless mode, we need to add some extra options in `config.json`, other steps are same with above:
```bash
$ mkdir -p tutorial/rootfs
$ cd tutorial
# use docker to export busybox into the rootfs directory
$ docker export $(docker create busybox) | tar -C rootfs -xvf -
$ ../youki spec # will generate a spec file named config.json with rootless mode
$ ../youki run rootless-container # will create and run a container with rootless mode
```
## Usage
Start the docker daemon.