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Backport of docs: add note about docker DNS config when using bridge mode into release-1.1.12 #12240

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Mar 8, 2022
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Backport of docs: add note about docker DNS config when using bridge mode into release-1.1.12 #12240

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25 changes: 17 additions & 8 deletions website/content/docs/drivers/docker.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -100,13 +100,21 @@ config {
}
```

- `dns_search_domains` - (Optional) A list of DNS search domains for the container
to use.

- `dns_options` - (Optional) A list of DNS options for the container to use.

- `dns_servers` - (Optional) A list of DNS servers for the container to use
(e.g. ["8.8.8.8", "8.8.4.4"]). Requires Docker v1.10 or greater.
- `dns_search_domains` - (Optional) A list of DNS search domains for
the container to use. If you are using bridge networking mode with a
`network` block in the task group, you must set all DNS options in
the `network.dns` block instead.

- `dns_options` - (Optional) A list of DNS options for the container
to use. If you are using bridge networking mode with a `network`
block in the task group, you must set all DNS options in the
`network.dns` block instead.

- `dns_servers` - (Optional) A list of DNS servers for the container
to use (e.g. ["8.8.8.8", "8.8.4.4"]). Requires Docker v1.10 or
greater. If you are using bridge networking mode with a `network`
block in the task group, you must set all DNS options in the
`network.dns` block instead.

- `entrypoint` - (Optional) A string list overriding the image's entrypoint.

Expand Down Expand Up @@ -245,7 +253,8 @@ config {
the group `network.mode = "bridge"` you should not set the Docker config
`network_mode`, or the container will be unable to reach other containers in
the task group. This will also prevent [Connect]-enabled tasks from reaching
the Envoy sidecar proxy.
the Envoy sidecar proxy. You must also set any DNS options in the `network.dns`
block and not in the task configuration.

- `pid_mode` - (Optional) `host` or not set (default). Set to `host` to share
the PID namespace with the host. Note that this also requires the Nomad agent
Expand Down