feat: Add labels to runners

Signed-off-by: Julien Riou <julien@riou.xyz>

README.md

@@ -78,7 +78,7 @@ The following variables can be configured for this role:
 | `forgejo_runners_version` | `str` | No | `"9.1.1"` | Version of the runners |
 | `forgejo_runners_config_dir` | `path` | No | `"/etc/forgejo-runners"` | Path to the configuration directory of the runners |
 | `forgejo_runners_instance` | `str` | No | N/A | URL of the Forgejo instance to register the runners |
-| `forgejo_runners` | `dict` | No | N/A | List of runners to configure<br><br>The key is the name of the repository on the instance<br><br>The value is the token |
+| `forgejo_runners` | `dict` | No | N/A | List of runners to configure<br><br>The key is the name of the repository on the instance<br><br>The value is a dict with a `token` key and optionally a dict of `labels` |
 
 ### `forgejo_server`<a id="variable-forgejo_server"></a>
 
@@ -283,7 +283,7 @@ List of runners to configure
 
 The key is the name of the repository on the instance
 
-The value is the token
+The value is a dict with a `token` key and optionally a dict of `labels`
 
 - **Type**: `dict`
 - **Required**: No
@@ -309,6 +309,28 @@ Then run the playbook:
 ansible-playbook forgejo.yml
 ```
 
+## Runners
+
+Example of runners configuration:
+
+```yaml
+- hosts: forgejo
+  roles:
+    - jriou.forgejo
+  vars:
+    forgejo_runners:
+      coller:
+        token: **redacted**
+        labels:
+          debian12: docker://data.forgejo.org/oci/debian:bookworm
+          debian13: docker://data.forgejo.org/oci/debian:trixie
+      ansible:
+        token: **redacted**
+        labels:
+          docker: docker://data.forgejo.org/oci/node:latest
+```
+
+
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