Also update to the correct one information about required env variables
for multi-arch build
Signed-off-by: Yulia Gaponenko <yulia.gaponenko1@de.ibm.com>
Travis is used, as it has native hardware to run the build for many
architectures (amd64, s390x, ppc64le). Docker is used as build and
manifest tool. `quay.io/skopeo/upstream:master`, `quay.io/skopeo/stable:v1.2.0`
and `quay.io/containers/skopeo:v1.2.0` are specified as target multi-arch
upstream image.
Travis config file has 3 stages:
- local-build to do the local test for linux/amd64 and osx, as it was in
the initial code
- image-build-push to build and push images for specific architectures
(amd64, s390x, ppc64le)
- manifest-multiarch-push to create and push manifest for multi-arch
image - `quay.io/skopeo/upstream:master`, `quay.io/skopeo/stable:v1.2.0`
and `quay.io/containers/skopeo:v1.2.0`
last stage amnd image push step are not done for pull request.
2 env variables specified in Travis settings are expected - QUAY_USERNAME and
QUAY_PASSWORD to push the images to quay.io.
As a result multi-arch images for 3 architectures are published.
README about build setup id prepared
Signed-off-by: Yulia Gaponenko <yulia.gaponenko1@de.ibm.com>
