FROM command does not honor ENV variables

[mtsyganov]

Actual behavior
When I create a new image from the base image registry.gitlab.com/gitlab-org/gitlab-ee/gitlab-assets-ee:11-5-stable-ee, I get an error

Expected behavior
Image is downloaded and parsed successfully same as docker do.

To Reproduce
Steps to reproduce the behavior:

1. build an image from base image registry.gitlab.com/gitlab-org/gitlab-ee/gitlab-assets-ee:11-5-stable-ee
2. receive error message

INFO[0000] Downloading base image "registry.gitlab.com/gitlab-org/gitlab-ee/gitlab-assets-ee:11-5-stable-ee" 
error building image: getting stage builder for stage 0: could not parse reference

Additional Information

• Dockerfile
  FROM registry.gitlab.com/gitlab-org/gitlab-ee/gitlab-assets-ee:11-5-stable-ee as assets

[priyawadhwa]

Hey @mtsyganov what version of the kaniko image are you using? I tried with gcr.io/kaniko-project/executor:v0.6.0 and gcr.io/kaniko-project/debug-v0.6.0 and they both build the image successfully.

[mtsyganov]

@priyawadhwa you are right.
I am sorry, I misunderstood the bug. The real problem is that kaniko dont handle correct the " in the FROM command when I use variables.

following Dockerfile will fail

ARG ASSETS_IMAGE="registry.gitlab.com/gitlab-org/gitlab-ee/gitlab-assets-ee:11-5-stable-ee"
FROM ${ASSETS_IMAGE} as assets

but this Dockerfile will succeed

ARG ASSETS_IMAGE=registry.gitlab.com/gitlab-org/gitlab-ee/gitlab-assets-ee:11-5-stable-ee
FROM ${ASSETS_IMAGE} as assets

In docker build both cases works fine