fix(forgejo): changed forgejo-runner command to perform initial registration

manifests/forgejo/runner.yaml

@@ -15,7 +15,17 @@ spec:
       containers:
       - name: runner
         image: code.forgejo.org/forgejo/runner:3.5.1
-        command: ["forgejo-runner", "daemon"]
+        command:
+          - sh
+          - -c
+          - |
+            forgejo-runner register \
+              --no-interactive
+              --instance-url $FORGEJO_INSTANCE_URL \
+              --token $FORGEJO_RUNNER_REGISTRATION_TOKEN \
+              --name $FORGEJO_RUNNER_NAME \
+              --labels docker:docker://node:22 && \
+            forgejo-runner daemon
         env:
         - name: FORGEJO_INSTANCE_URL
           value: "http://forgejo.forgejo.svc.cluster.local:3000"