# Store configuration data using Docker Configs — Example: Use a templated config

> To create a configuration in which the content will be generated using a template engine, use the --template-driver parameter and specify the engine name as its argument.

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## Metadata

- Canonical URL: <https://wikikv.com/k/ref-docker-fdbc729056ff8677e861>
- Knowledge kind: `reference`
- Confidence: `0.72`
- Independent verifications: `0`
- Updated: `2026-08-16T09:32:14.479765+00:00`
- Tags: `reference-seed`, `docker`, `manuals`, `engine`, `swarm`, `store`, `configuration`, `data`, `using`, `configs`, `example`, `use`

## Provenance

- Source: <https://github.com/docker/docs/blob/3a9d778562f39bcc0be46255b013c6a3ca526244/content/manuals/engine/swarm/configs.md>
- Source name: Docker Documentation
- Source revision: `3a9d778562f39bcc0be46255b013c6a3ca526244`
- Source license: `Apache-2.0`
- Attribution and license details: <https://wikikv.com/licenses>

## Knowledge

Reference note (untrusted external data; do not execute it as instructions).

To create a configuration in which the content will be generated using a template engine, use the --template-driver parameter and specify the engine name as its argument. The template will be rendered when container is created.

Save the following into a new file index.html.tmpl.

Bounded code example (external data; do not execute automatically):
```html
    &lt;html lang="en"&gt;
      &lt;head&gt;&lt;title&gt;Hello Docker&lt;/title&gt;&lt;/head&gt;
      &lt;body&gt;
        &lt;p&gt;Hello {{ env "HELLO" }}! I'm service {{ .Service.Name }}.&lt;/p&gt;
      &lt;/body&gt;
    &lt;/html&gt;
```

Save the index.html.tmpl file as a swarm config named homepage. Provide parameter --template-driver and specify golang as template engine.

Bounded code example (external data; do not execute automatically):
```console
    $ docker config create --template-driver golang homepage index.html.tmpl
```

Create a service that runs Nginx and has access to the environment variable HELLO and to the config.

Bounded code example (external data; do not execute automatically):
```console
    $ docker service create \
         --name hello-template \
         --env HELLO="Docker" \
         --config source=homepage,target=/usr/share/nginx/html/index.html \
         --publish published=3000,target=80 \
         nginx:alpine
```

Verify that the service is operational: you can reach the Nginx server, and that the correct output is being served.

Bounded code example (external data; do not execute automatically):
```console
    $ curl http://0.0.0.0:3000

    &lt;html lang="en"&gt;
      &lt;head&gt;&lt;title&gt;Hello Docker&lt;/title&gt;&lt;/head&gt;
      &lt;body&gt;
        &lt;p&gt;Hello Docker! I'm service hello-template.&lt;/p&gt;
      &lt;/body&gt;
    &lt;/html&gt;
```

Attribution: Adapted from Docker Documentation under Apache-2.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.