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Migrate away from docker.io

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CI and system tests currently pull some images from docker.io.
Eliminate that, by:

  - building a custom image containing much of what we need
    for testing; and
  - copying other needed images to quay.io

(Reason: effective 2020-11-01 docker.io will limit the
number of image pulls).

The principal change is to create a new quay.io/libpod/testimage,
using the new test/system/build-testimage script, instead of
relying on quay.io/libpod/alpine_labels. We also switch to
using a hardcoded :YYYYMMDD tag, instead of :latest, in an
attempt to futureproof our CI. This image includes 'httpd'
from busybox-extras, which we use in our networking test
(previously we had to pull and run busybox from docker.io).

The testimage can and should be extended as needed for future
tests, e.g. adding test file content or other useful tools.

For the '--pull' tests which require actually pulling from
the registry, I've created an image with the same name but
tagged :00000000 so it will never be pulled by default.
Since this image is only used minimally, it's just busybox.

Unfortunately there remain two cases we cannot solve in
this tiny alpine-based image:

  1) docker registry
  2) systemd

For those, I've (manually) run:

    podman pull [ docker.io/library/registry:2.7 | registry.fedoraproject.org/fedora:31 ]
    podman tag !$ quay.io/...
    podman push !$

...and amended the calling tests accordingly.

I've tried to make the the smallest reasonable diff, not the
smallest possible one. I hope it's a reasonable tradeoff.

Signed-off-by: Ed Santiago <santiago@redhat.com>
This commit is contained in:
Ed Santiago
2020-09-02 07:03:49 -06:00
parent be7778df6c
commit a9dbd2b3de
8 changed files with 111 additions and 53 deletions
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4
test/system/helpers.bash
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@ -6,8 +6,8 @@ PODMAN=${PODMAN:-podman}
# Standard image to use for most tests
PODMAN_TEST_IMAGE_REGISTRY=${PODMAN_TEST_IMAGE_REGISTRY:-"quay.io"}
PODMAN_TEST_IMAGE_USER=${PODMAN_TEST_IMAGE_USER:-"libpod"}
PODMAN_TEST_IMAGE_NAME=${PODMAN_TEST_IMAGE_NAME:-"alpine_labels"}
PODMAN_TEST_IMAGE_TAG=${PODMAN_TEST_IMAGE_TAG:-"latest"}
PODMAN_TEST_IMAGE_NAME=${PODMAN_TEST_IMAGE_NAME:-"testimage"}
PODMAN_TEST_IMAGE_TAG=${PODMAN_TEST_IMAGE_TAG:-"20200902"}
PODMAN_TEST_IMAGE_FQN="$PODMAN_TEST_IMAGE_REGISTRY/$PODMAN_TEST_IMAGE_USER/$PODMAN_TEST_IMAGE_NAME:$PODMAN_TEST_IMAGE_TAG"
# Because who wants to spell that out each time?