Initial set of files; haven't tried to use these remotely yet.

+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ./task-postgresql-pod.yaml
+
+configMapGenerator:
+  - name: task-postgresql-pod-kustomization
+    options:
+      disableNameSuffixHash: true
+    files:
+      - postgresql-pod_kustomization.yaml=postgresql-pod/kustomization.yaml
+      - postgresql-pod_postgresql-pod.yaml=postgresql-pod/postgresql-pod.yaml
+      - postgresql-pod_set-deployment-config_deployment-config.env=postgresql-pod/set-deployment-config/deployment-config.env
+      - postgresql-pod_set-deployment-config_kustomization.yaml=postgresql-pod/set-deployment-config/kustomization.yaml
+
+---

+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - postgresql-pod.yaml
+
+components:
+  - set-deployment-config
+
+patches:
+  - patch: |-
+      apiVersion: v1
+      kind: ConfigMap
+      metadata:
+        name: ignored
+      $patch: delete
+    target:
+      kind: ConfigMap
+

+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgresql-server-
+  ownerReferences:
+    - apiVersion: v1
+      kind: Pod
+      blockOwnerDeletion: true
+      controller: true
+      name: PARENT_POD_NAME
+      uid: PARENT_POD_UID
+spec:
+  type: ClusterIP
+  selector:
+    owner-uid: PARENT_POD_UID
+  ports:
+    - name: pgsql
+      protocol: TCP
+      port: 5432
+      targetPort: 5432
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: postgresql-server-
+  labels:
+    owner-uid: PARENT_POD_UID
+  ownerReferences:
+    - apiVersion: v1
+      kind: Pod
+      blockOwnerDeletion: true
+      controller: true
+      name: PARENT_POD_NAME
+      uid: PARENT_POD_UID
+spec:
+  volumes:
+    - name: postgresql-data
+      emptyDir: {}
+  containers:
+    - name: postgresql
+      image: bitnami/postgresql:14.1.0-debian-10-r66
+      #securityContext:
+      #  runAsUser: 1001
+      #  runAsGroup: 1001
+      env:
+        - name: POSTGRESQL_PASSWORD
+          value: CHANGEME
+
+      volumeMounts:
+        - name: postgresql-data
+          mountPath: /bitnami/postgresql
+---

+PARENT_POD_NAME
+PARENT_POD_UID

+apiVersion: kustomize.config.k8s.io/v1alpha1
+kind: Component
+
+configMapGenerator:
+  - name: deployment-config
+    options:
+      disableNameSuffixHash: true
+#    behavior: merge
+    envs:
+      - deployment-config.env
+
+replacements:
+  - source:
+      kind: ConfigMap
+      version: v1
+      name: deployment-config
+      fieldPath: data.PARENT_POD_NAME
+    targets:
+      - select:
+          kind: Pod
+          name: postgresql-server-
+        fieldPaths:
+          - metadata.ownerReferences.0.name
+      - select:
+          kind: Service
+          name: postgresql-server-
+        fieldPaths:
+          - metadata.ownerReferences.0.name
+  - source:
+      kind: ConfigMap
+      version: v1
+      name: deployment-config
+      fieldPath: data.PARENT_POD_UID
+    targets:
+      - select:
+          kind: Pod
+          name: postgresql-server-
+        fieldPaths:
+          - metadata.ownerReferences.0.uid
+          - metadata.labels.owner-uid
+      - select:
+          kind: Service
+          name: postgresql-server-
+        fieldPaths:
+          - metadata.ownerReferences.0.uid
+          - spec.selector.owner-uid
+

+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: postgresql-pod
+spec:
+  description: >-
+    This Task deploys (or delete) a Kubernetes resource (pod). It uses
+    kubectl for that.
+
+  params:
+    - name: kubectl-image
+      default: bitnami/kubectl:1.21
+    - name: bash-image
+      default: bash
+    - name: kustomize-image
+      default: us.gcr.io/k8s-artifacts-prod/kustomize/kustomize:v4.5.2
+#  results:
+#    - name: job-name
+  volumes:
+    - name: postgresql-pod-kustomization
+      configMap:
+        name: postgresql-pod-kustomization
+  steps:
+    - name: mount-postgresql-pod-kustomization
+      image: $(params.bash-image)
+      script: |
+        #!/usr/bin/env bash
+        set -ex
+        mkdir /workspace/kustomizations
+        cd /srv/postgresql-pod-kustomization-cm/
+        for file in *; do
+          translated="$(echo "$file" | sed "s,_,/,g")"
+          dir="$(dirname "$translated")"
+          base="$(basename "$translated")"
+          mkdir -p "/workspace/kustomizations/$dir"
+          cp "$file" "/workspace/kustomizations/$dir/$base"
+        done
+      volumeMounts:
+        - name: postgresql-pod-kustomization
+          mountPath: /srv/postgresql-pod-kustomization-cm
+    - name: run-kustomize-4-x
+      image: $(params.kustomize-image)
+      script: |
+        #!/bin/sh
+        set -ex
+        kustomize build /workspace/kustomizations/postgresql-pod > /workspace/postgresql-pod.yaml
+      env:
+        - name: PARENT_POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: PARENT_POD_UID
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.uid
+
+    - name: set-generate-name
+      image: $(params.bash-image)
+      script: |
+        #!/usr/bin/env bash
+        set -ex
+        cat /workspace/postgresql-pod.yaml
+        sed -i -e 's/^  name:/  generateName:/' /workspace/postgresql-pod.yaml
+        cat /workspace/postgresql-pod.yaml
+    - name: create-postgresql-pod
+      image: $(params.kubectl-image)
+      script: |
+        #!/usr/bin/env bash
+
+        set -ex
+        kubectl create -f /workspace/postgresql-pod.yaml -o jsonpath --template '{.metadata.name}'/ > /workspace/create-output.json
+        cat /workspace/create-output.json
+
+---