Alpine

• https://alpinelinux.org/

Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busybox.

• https://alpinelinux.org/downloads/

• http://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86_64/alpine-standard-3.12.1-x86_64.iso

ISO size is 125MB.

Virtualbox