infra: Recreate pods on infra deploys (#275)

## Motivation and Context

In staging (and prod, for now) we pull the `:latest` mcp-registry image.
But K8s won't actually change anything unless we recreate the pods.

This change ensures the workflow goes from docker -> staging -> prod,
and changes the annotation so that the pods are recreated each deploy.
This ensures they actually pull the latest version.

## How Has This Been Tested?

Deployed locally to minikube

## Breaking Changes

None

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed

deploy/pkg/k8s/registry.go

@@ -1,6 +1,9 @@
 package k8s
 
 import (
+	"os/exec"
+	"strings"
+
 	v1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/apps/v1"
 	corev1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/core/v1"
 	metav1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/meta/v1"
@@ -11,6 +14,17 @@ import (
 	"github.com/modelcontextprotocol/registry/deploy/infra/pkg/providers"
 )
 
+// getGitCommitHash returns the current git commit hash
+func getGitCommitHash() string {
+	cmd := exec.Command("git", "rev-parse", "HEAD")
+	output, err := cmd.Output()
+	if err != nil {
+		// Fallback to a default value if git command fails
+		return "unknown"
+	}
+	return strings.TrimSpace(string(output))
+}
+
 // DeployMCPRegistry deploys the MCP Registry to the Kubernetes cluster
 func DeployMCPRegistry(ctx *pulumi.Context, cluster *providers.ProviderInfo, environment string) (*corev1.Service, error) {
 	conf := config.New(ctx, "mcp-registry")
@@ -58,6 +72,10 @@ func DeployMCPRegistry(ctx *pulumi.Context, cluster *providers.ProviderInfo, env
 					Labels: pulumi.StringMap{
 						"app": pulumi.String("mcp-registry"),
 					},
+					Annotations: pulumi.StringMap{
+						// Use git commit hash to trigger pod restarts when deploying new infra versions
+						"registry.modelcontextprotocol.io/deployCommit": pulumi.String(getGitCommitHash()),
+					},
 				},
 				Spec: &corev1.PodSpecArgs{
 					Containers: corev1.ContainerArray{