traefik/docs/content/middlewares/addprefix.md

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# Add Prefix
Prefixing the Path
{: .subtitle }
![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
[Middlewares]
[Middlewares.add-foo.AddPrefix]
prefix = "/foo"
```
??? example "Docker -- Prefixing with /bar"
```yaml
a-container:
image: a-container-image
labels:
- "traefik.middlewares.add-bar.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 (`/`).