Alpine Linux Docker SSHD Image 使用 VOL-save?

Alpine Linux Docker SSHD Image Uses VOL-save?

我正在查看的其中一张 Alpine 图片中包含以下行:

RUN \
  apk --no-cache add openssh && \
  VOL-save /etc/ssh && \
  echo "root:root" | chpasswd

VOL-save 是做什么的?

TIA, 奥莱

快速 google 给了我这个; https://github.com/ekapusta/docker-alpine-base#tools

VOL-save will backup directory inside container.
VOL-restore will restore container from container (usually into VOLUME).