1. Chart.lock

helm dependency update 能够自动生成 Chart.lock 文件，他是当前 Chart 依赖的一个明确的版本快照，是 Chart.yaml dependency 的子集。

$ cat Chart.lock 
dependencies:
- name: memcached
  repository: https://charts.bitnami.com/bitnami
  version: 6.0.7
- name: mariadb
  repository: https://charts.bitnami.com/bitnami
  version: 10.4.2
- name: common
  repository: https://charts.bitnami.com/bitnami
  version: 1.12.0
digest: sha256:72b9edbb05e65f1265789a5d9f56924249a3b827dfc2b77c6051e042367bd8ef
generated: "2022-03-18T10:23:52.027072236Z"