Fix service port mappings when input is undefined, null, or empty (#60)

* fix: service without ports defined

* fix port mappings when ports are undefined,null or empty

* fix

Co-authored-by: Ronald Claveau <ronald.claveau@pennylane.com>

packages/k8s/src/hooks/prepare-job.ts

@@ -125,10 +125,9 @@ function generateResponseFile(
   )
   if (serviceContainers?.length) {
     response.context['services'] = serviceContainers.map(c => {
-      if (!c.ports) {
-        return
+      if (!c.ports?.length) {
+        return { image: c.image }
       }
-
       const ctxPorts: ContextPorts = {}
       for (const port of c.ports) {
         ctxPorts[port.containerPort] = port.hostPort