Dockerfile: no need to disable repos

[vrutkovs]

We no longer run rpm-ostree update <new machine-os> so repos should be enabled as these are required to install additional packages.

Fixes #445

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vrutkovs

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 [vrutkovs]

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

[LorbusChris]

/lgtm

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 07d1476 and 2 for PR HEAD 15ec45b in total

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD ef639ab and 1 for PR HEAD 15ec45b in total

[openshift-ci]

New changes are detected. LGTM label has been removed.

[vrutkovs]

/override ci/prow/e2e-gcp-upgrade

Known issue

[openshift-ci]

@vrutkovs: Overrode contexts on behalf of vrutkovs: ci/prow/e2e-gcp-upgrade

In response to this:

/override ci/prow/e2e-gcp-upgrade

Known issue

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[openshift-ci]

@vrutkovs: all tests passed!

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.