Register CRD OpenAPI for merge keys

Teach kustomize CRD merge/list semantics so patches merge correctly

cat <<'EOF' >> kustomization.yaml
openapi:
  path: crd-schema.json
EOF

More kustomize commands

Build kustomization

kustomize build ./overlays/prod

Render all manifests for an overlay to stdout
Apply kustomization

kubectl apply -k ./overlays/prod

Build and apply kustomization in one step via kubectl
Diff kustomization

kubectl diff -k ./overlays/prod

Show what changes before applying
Add resource to kustomization

kustomize edit add resource ./deployment.yaml

Append a resource file to kustomization.yaml
Set image in kustomization

kustomize edit set image myapp=registry/myapp:v2.0.0

Update image tag in kustomization.yaml