fixed prepare-job for docker to allow for no job container

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

@@ -94,7 +94,10 @@ export async function prepareJob(
     )
   }
 
-  const isAlpine = await isContainerAlpine(containerMetadata!.id)
+  let isAlpine = false
+  if (containerMetadata?.id) {
+    isAlpine = await isContainerAlpine(containerMetadata.id)
+  }
 
   if (containerMetadata?.id) {
     containerMetadata.ports = await containerPorts(containerMetadata.id)
@@ -105,7 +108,10 @@ export async function prepareJob(
     }
   }
 
-  const healthChecks: Promise<void>[] = [healthCheck(containerMetadata!)]
+  const healthChecks: Promise<void>[] = []
+  if (containerMetadata) {
+    healthChecks.push(healthCheck(containerMetadata))
+  }
   for (const service of servicesMetadata) {
     healthChecks.push(healthCheck(service))
   }

packages/docker/tests/prepare-job-test.ts

@@ -118,4 +118,14 @@ describe('prepare job', () => {
     expect(redisServicePorts['80']).toBe('8080')
     expect(redisServicePorts['8080']).toBe('8088')
   })
+
+  it('should run prepare job without job container without exception', async () => {
+    prepareJobDefinition.args.container = null
+    const prepareJobOutput = testSetup.createOutputFile(
+      'prepare-job-output.json'
+    )
+    await expect(
+      prepareJob(prepareJobDefinition.args, prepareJobOutput)
+    ).resolves.not.toThrow()
+  })
 })

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

@@ -72,22 +72,22 @@ export async function prepareJob(
       new Set([PodPhase.PENDING])
     )
     core.debug('Job pod is ready for traffic')
-
-    let isAlpine = false
-    try {
-      isAlpine = await isPodContainerAlpine(
-        createdPod.metadata.name,
-        JOB_CONTAINER_NAME
-      )
-    } catch (err) {
-      throw new Error(`Failed to determine if the pod is alpine: ${err}`)
-    }
-    core.debug(`Setting isAlpine to ${isAlpine}`)
-    generateResponseFile(responseFile, createdPod, isAlpine)
   } catch (err) {
     await prunePods()
     throw new Error(`Pod failed to come online with error: ${err}`)
   }
+
+  let isAlpine = false
+  try {
+    isAlpine = await isPodContainerAlpine(
+      createdPod.metadata.name,
+      JOB_CONTAINER_NAME
+    )
+  } catch (err) {
+    throw new Error(`Failed to determine if the pod is alpine: ${err}`)
+  }
+  core.debug(`Setting isAlpine to ${isAlpine}`)
+  generateResponseFile(responseFile, createdPod, isAlpine)
 }
 
 function generateResponseFile(