[feature request] Provide multi-arch image

[SataQiu]

What would you like to be added:
Provide multi-arch image

Why is this needed:

# docker manifest inspect openyurt/yurt-app-manager:v0.5.0
{
	"schemaVersion": 2,
	"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
	"config": {
		"mediaType": "application/vnd.docker.container.image.v1+json",
		"size": 1041,
		"digest": "sha256:bb195e9e070f2f038200ad4ec321d3b1bc4aacdbd45775196bfc82b1de6ec737"
	},
	"layers": [
		{
			"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
			"size": 17743696,
			"digest": "sha256:39fafc05754f195f134ca11ecdb1c9a691ab0848c697fffeb5a85f900caaf6e1"
		},
		{
			"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
			"size": 10941066,
			"digest": "sha256:35e9e1c1624942647c0dcaaa9829b9dbeb13e48d764df7908ed899b44282fb5d"
		}
	]
}

others
/kind feature

[rambohe-ch]

The issue was fixed by #61 . now we use docker buildx build to provide multi-arch image.