Update podmanimage files to adjust perms on containers.conf for rootless

[TomSweeneyRedHat]

Adding the changes to the Podman image Docker/Containerfiles similar
to @rhatdan 's changes in containers/buildah#2332

In short it changes the perms on containers.conf so it can be used by a
rootless user.

Signed-off-by: TomSweeneyRedHat [email protected]

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: TomSweeneyRedHat

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [TomSweeneyRedHat]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[TomSweeneyRedHat]

OK, I'm stumped. is this a known issue with the builds? It's always the small innocuous changes that bite me. I didn't touch anything in testing or go code, just changes to Dockerfiles that are used by quay.io to make the container images.

# github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent
vendor/github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/parent.go:94:9: undefined: "github.com/pkg/errors".Is
make[1]: *** [Makefile:185: bin/podman] Error 2
make[1]: Leaving directory '/root/rpmbuild/BUILD/libpod-9229312f'
error: Bad exit status from /var/tmp/rpm-tmp.2CdjQQ (%build)


RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.2CdjQQ (%build)
make: *** [Makefile:667: package] Error 1

[rhatdan]

/lgtm