message: only find unique app instances
diff: @@ -484,11 +484,14 @@ export async function findAppInstances (
  .map(reg => kb.each(reg, ns.solid('instanceContainer')))
  .flat()
  + function unique (arr: NamedNode[]): NamedNode[] {
  + return Array.from(new Set(arr))
  + }
  context.instances = context.instances || []
  - context.instances = context.instances.concat(instances)
  + context.instances = unique(context.instances.concat(instances))
  context.containers = context.containers || []
  - context.containers = context.containers.concat(containers)
  + context.containers = unique(context.containers.concat(containers))
  if (!containers.length) {
  return context
  }
  