Extend the usage of build ENV USE_LOCAL_IMAGES

[w13915984028]

Problem:

harvester/harvester#6489

Solution:

Allow specify a tag (e.g. for all 3 Harvester related images) via the ENV USE_LOCAL_IMAGES to skip the qualified images directly.

Related Issue:
harvester/harvester#6489

Test plan:

[w13915984028]

export USE_LOCAL_IMAGES=fix6486-head && make build-iso

the build log:

...
[ImageCache] docker.io/rancher/harvester-pcidevices:v0.4.0 exists.
[ImageCache] docker.io/rancher/harvester-seeder:v0.3.0 exists.
[ImageCache] docker.io/rancher/harvester-upgrade:fix6486-head meets the specified tag from USE_LOCAL_IMAGES.
[ImageCache] docker.io/rancher/harvester-upgrade:fix6486-head exists.
[ImageCache] docker.io/rancher/harvester-vm-import-controller:v0.4.0 exists.
[ImageCache] docker.io/rancher/harvester-webhook:fix6486-head meets the specified tag from USE_LOCAL_IMAGES.
[ImageCache] docker.io/rancher/harvester-webhook:fix6486-head exists.
[ImageCache] docker.io/rancher/harvester:fix6486-head meets the specified tag from USE_LOCAL_IMAGES.
[ImageCache] docker.io/rancher/harvester:fix6486-head exists.
[ImageCache] docker.io/rancher/support-bundle-kit:master-head has "-head" suffix.
[ImageCache] docker.io/rancher/support-bundle-kit:master-head: pulling...
master-head: Pulling from rancher/support-bundle-kit
Digest: sha256:c9464513d387e6acadc38144eec0758d5e6896e8678d543a2237594591bc1e4b
Status: Image is up to date for rancher/support-bundle-kit:master-head

With this extension, the following process is smooth:

(1) Git clone Harvester
(2) Checkout a new branch to add code and commit
(3) make && make package && make package-webhook && make package-upgrade";  3 images taged as `brancher-name-head` are available on local machine docker
(4) export USE_LOCAL_IMAGES=brancher-name-head
(5) make build-iso

This is useful for those changes which need to be validated via new ISO installation, e.g. change Harvester chart.

[w13915984028]

@mergify backport v1.4

[mergify]

backport v1.4

✅ Backports have been created

• #830 Extend the usage of build ENV USE_LOCAL_IMAGES (backport #828) has been created for branch v1.4

[tserong]

Neat!

We'll need to also update the wiki page at https://github.com/harvester/harvester/wiki/Build-ISO-images once this is merged.

[w13915984028]

Neat!

We'll need to also update the wiki page at https://github.com/harvester/harvester/wiki/Build-ISO-images once this is merged.

@tserong

The wiki page https://github.com/harvester/harvester/wiki/Build-ISO-images is updated as well.

[tserong]

Thanks @w13915984028!