chore: update server.json path (#1985)

In this PR, the following was updated: 
* Updated the server.json file
* Added the requirement to add an annotation to the Docker image
([here](https://github.com/modelcontextprotocol/registry/blob/9ce229d3/docs/guides/publishing/publish-server.md#requirements-3)).

```
curl --request GET \
  --url 'https://registry.modelcontextprotocol.io/v0.1/servers?search=io.github.googleapis%2Fgenai-toolbox' \
  --header 'Accept: application/json, application/problem+json'
 ```

.github/workflows/publish-mcp.yml

@@ -35,7 +35,7 @@ jobs:
         shell: bash
         run: |
           MAX_ATTEMPTS=10
-          VERSION=$(jq -r '.version' .registry/server.json)
+          VERSION=$(jq -r '.version' server.json)
           REGISTRY_URL="https://us-central1-docker.pkg.dev/v2/database-toolbox/toolbox/toolbox/manifests/${VERSION}"
 
           # initially sleep time to wait for the version release

Dockerfile

@@ -34,4 +34,6 @@ WORKDIR /app
 COPY --from=build --chown=nonroot /go/src/genai-toolbox/genai-toolbox /toolbox
 USER nonroot
 
+LABEL io.modelcontextprotocol.server.name="io.github.googleapis/genai-toolbox"
+
 ENTRYPOINT ["/toolbox"] 

server.json

@@ -18,7 +18,6 @@
     "packages": [
         {
             "registryType": "oci",
-            "registryBaseUrl": "https://artifactregistry.googleapis.com",
             "identifier": "us-central1-docker.pkg.dev/database-toolbox/toolbox/toolbox:0.20.0",
             "transport": {
                 "type": "streamable-http",
@@ -35,6 +34,7 @@
                 {
                     "type": "named",
                     "name": "--address",
+                    "valueHint": "host",
                     "description": "Address of the interface the server will listen on.",
                     "value": "{host}",
                     "variables": {
@@ -48,6 +48,7 @@
                 {
                     "type": "named",
                     "name": "--port",
+                    "valueHint": "port",
                     "description": "Port the server will listen on.",
                     "value": "{port}",
                     "variables": {