fromlatest.io still errors on having ARG before FROM

[hansbogert]

Currently, the linter gives warning of 'First Command Must Be FROM (Possible Bug)'. However, I think there is at least one exception:

In order to have access to build arguments in multiple stages, said build arguments should be declared in the outer scope of the Dockerfile, before any FROM directives

[deiga]

@hansbogert This should already be working, see #105

[hansbogert]

strange, the online variant still shows this behaviour

[deiga]

My hunch would be, that the online variant is not using the newest version. It doesn't have the version listed anywhere, so hard to check

[deiga]

Could you reword the title to reflect that the issue is with the online variant? :)

[asears]

This still seems to be happening in https://www.fromlatest.io/#/

ARG is valid syntax before FROM as of moby/moby#31352

[SimonHeimberg]

The online version seems to be updated. At least the following examples works. Can we close this issue?

ARG xxx

FROM ubuntu:bionic

[hansbogert]

@SimonHeimberg seems to work correctly indeed.