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Clarified README on enabling Docker experimental features #853

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17 changes: 10 additions & 7 deletions README.md
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Expand Up @@ -43,19 +43,22 @@ Docker

In order to run your own copy of the book with gitbook within a local container:

1. Enable Docker experimental features with vim or another text editor
1. (Optional) Enable Docker experimental features (if you want to `--squash` image layers) with vim or another text editor:
```bash
sudo vim /usr/lib/systemd/system/docker.service
EDITOR=vim sudoedit /etc/docker/daemon.json
```

Then add --experimental=true to the end of the ExecStart=/usr/bin/dockerd -H fd:// line and save.
Then add `"experimental": true` to the JSON and save. E.g. in case if you initially had empty `daemon.json` the result should be:

Eg: *ExecStart=/usr/bin/dockerd -H fd:// --experimental=true*
```json
{
"experimental" : true
}
```

Then, you need to reload and restart the Docker daemon:
Finally, restart the Docker daemon:
```bash
systemctl daemon-reload
systemctl restart docker.service
systemctl restart --now docker.service
```

2. Run docker image
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