Update faq with common problem in docker (#3438)

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Tomas Touceda 2021-12-21 11:25:00 -03:00 committed by GitHub
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@ -163,3 +163,18 @@ If your device is showing up as an offline host in the Fleet instance, and you'r
* Try un-enrolling and re-enrolling the host. You can do this by uninstalling osquery on the host and then enrolling your device again using one of the [recommended methods](./04-Adding-hosts.md).
* Restart the `fleetctl preview` docker containers.
* Uninstall and reinstall Docker.
## Fleet preview fails with Invalid interpolation. What should I do?
If you tried running fleet preview and you get the following error:
```
fleetctl preview
Downloading dependencies into /root/.fleet/preview...
Pulling Docker dependencies...
Invalid interpolation format for "fleet01" option in service "services": "fleetdm/fleet:${FLEET_VERSION:-latest}"
Failed to run docker-compose
```
You are probably running an old version of Docker. You should download the installer for your platform from https://docs.docker.com/compose/install/