`ARG VARIANT`

[loynoir]

ARG VARIANT

Given

ARG VARIANT
FROM python:${VARIANT}

After lock generate + rewerite, wrong

ARG VARIANT
FROM python

After lock generate + rewerite, correct. But compared to origin, wrong.

ARG VARIANT
FROM python:latest@sha256:hash

ARG VARIANT=FOOBAR

Given

ARG VARIANT="alpine"
FROM python:${VARIANT}

After lock generate + rewerite, debatable.

ARG VARIANT="alpine"
FROM python:alpine@sha256:hash