traefik/docs/content/middlewares/addprefix.md

# Add Prefix

Prefixing the Path 
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![AddPrefix](../assets/img/middleware/addprefix.png) 

The AddPrefix middleware updates the URL Path of the request before forwarding it.

## Configuration Examples

??? example "File -- Prefixing with /foo"

    ```toml
    [http.middlewares]
      [http.middlewares.add-foo.AddPrefix]
         prefix = "/foo"
    ```

??? example "Docker -- Prefixing with /bar"

    ```yaml
    a-container:
      image: a-container-image 
        labels:
          - "traefik.http.middlewares.add-bar.addprefix.prefix=/bar"
    ```

??? example "Kubernetes -- Prefixing with /bar"

    ```yaml
    apiVersion: traefik.containo.us/v1alpha1
    kind: Middleware
    metadata:
      name: addprefix
    spec:
      addprefix:
        prefix: /bar
    ```

## Configuration Options

### prefix

`prefix` is the string to add before the current path in the requested URL. It should include the leading slash (`/`).