podman: Podman build does not keep ENV from Dockerfile on COPY or ADD

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

When using ENV defined vars to select files to ADD or COPY, build fail.

Steps to reproduce the issue:

1. Create Dockerfile

FROM scratch
ENV  VERSION=0.0.1
COPY file-${VERSION}.txt /

1. Create file file-0.0.1.txt in same directory

2. Use podman build . to build image on that directory

Describe the results you received:

The build fail with message if file-0.0.1.txt exists:

Error: error dry-running “COPY file-${VERSION}.txt /”: no files found matching “/tmp/podman-test/file-.txt”: no such file or directory

If file-0.0.1.txt does not exists: Error: error building at STEP “COPY file-${VERSION}.txt /”: no files found matching “/tmp/podman-test/file-0.0.1.txt”: no such file or directory

Describe the results you expected:

Build success with file-0.0.1.txt added to image

Additional information you deem important (e.g. issue happens only occasionally):

I have buildah on my machine and the command buildah bud . works fine. Buildah version is:

Version:         1.10.1
Go Version:      go1.10.4
Image Spec:      1.0.1
Runtime Spec:    1.0.1-dev
CNI Spec:        0.4.0
libcni Version:  
Git Commit:      
Built:           Thu Aug  8 17:29:48 2019
OS/Arch:         linux/amd64

Output of podman version:

Version:            1.6.2
RemoteAPI Version:  1
Go Version:         go1.10.4
OS/Arch:            linux/amd64

Output of podman info --debug:

debug:
  compiler: gc
  git commit: ""
  go version: go1.10.4
  podman version: 1.6.2
host:
  BuildahVersion: 1.11.3
  CgroupVersion: v1
  Conmon:
    package: 'conmon: /usr/bin/conmon'
    path: /usr/bin/conmon
    version: 'conmon version 2.0.3, commit: unknown'
  Distribution:
    distribution: neon
    version: "18.04"
  IDMappings:
    gidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
  MemFree: 1488613376
  MemTotal: 8269008896
  OCIRuntime:
    name: runc
    package: 'containerd.io: /usr/bin/runc'
    path: /usr/bin/runc
    version: |-
      runc version 1.0.0-rc8+dev
      commit: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
      spec: 1.0.1-dev
  SwapFree: 2147479552
  SwapTotal: 2147479552
  arch: amd64
  cpus: 8
  eventlogger: journald
  hostname: s3gui
  kernel: 5.0.0-37-generic
  os: linux
  rootless: true
  slirp4netns:
    Executable: /usr/bin/slirp4netns
    Package: 'slirp4netns: /usr/bin/slirp4netns'
    Version: |-
      slirp4netns version 0.4.2
      commit: unknown
  uptime: 39m 49.49s
registries:
  blocked: null
  insecure: null
  search: null
store:
  ConfigFile: /home/guilherme/.config/containers/storage.conf
  ContainerStore:
    number: 1
  GraphDriverName: vfs
  GraphOptions: {}
  GraphRoot: /home/guilherme/.local/share/containers/storage
  GraphStatus: {}
  ImageStore:
    number: 19
  RunRoot: /run/user/1000
  VolumePath: /home/guilherme/.local/share/containers/storage/volumes

Package info (e.g. output of rpm -q podman or apt list podman):

podman/bionic,now 1.6.2-1~ubuntu18.04~ppa1 amd64 [installed]

Additional environment details (AWS, VirtualBox, physical, etc.):

O.S. on my notebook: KDE Neon based on Ubuntu Bionic

No LSB modules are available.
Distributor ID: neon
Description:    KDE neon User Edition 5.17
Release:        18.04
Codename:       bionic