Use a pvc per build for first PR

src/model/cloud-runner/kubernetes-build-platform.ts

@@ -49,7 +49,7 @@ class Kubernetes implements CloudRunnerProviderInterface {
     defaultSecretsArray: { ParameterKey: string; EnvironmentVariable: string; ParameterValue: string }[],
   ) {
     try {
-      this.pvcName = `unity-builder-pvc`;
+      this.pvcName = `unity-builder-pvc-${buildGuid}`;
       this.cleanupCronJobName = `unity-builder-cronjob-${buildGuid}`;
       this.serviceAccountName = `service-account-${buildGuid}`;
       await KubernetesStorage.createPersistentVolumeClaim(

src/model/cloud-runner/kubernetes-storage.ts

@@ -56,7 +56,7 @@ class KubernetesStorage {
       name: pvcName,
     };
     pvc.spec = {
-      accessModes: ['ReadWriteMany'],
+      accessModes: ['ReadWriteOnce'],
       storageClassName: process.env.K8s_STORAGE_CLASS || 'fileserver',
       resources: {
         requests: {