Fix canary build of the server image

Building and publishing the server image during a canary build, did not
use the canary tag, instead it used the version of the build, e.g.,
v1.1.0-7-gd0387ecb. It also means that on each canary build a new tag
is used when publishing the image.

By checking if we are doing a release of a tagged version or a canary
build we can use the correct tag.

Signed-off-by: Kim Christensen <kimworking@gmail.com>

magefile.go

@@ -421,11 +421,22 @@ func pushImagesTo(registry string, info releases.GitMetadata) {
 func PublishServerMultiArchImages() {
 	registry := getRegistry()
 	info := releases.LoadMetadata()
-	buildAndPushServerMultiArch(registry, info)
+
+	if info.IsTaggedRelease {
+		buildAndPushServerMultiArch(registry, info.Version)
+	} else {
+		fmt.Println("Skipping server image publish for not tagged release", info.Version)
+	}
+
+	if info.ShouldPublishPermalink() {
+		buildAndPushServerMultiArch(registry, info.Permalink)
+	} else {
+		fmt.Println("Skipping server image publish for permalink", info.Permalink)
+	}
 }
 
-func buildAndPushServerMultiArch(registry string, info releases.GitMetadata) {
-	img := fmt.Sprintf("%s/server:%s", registry, info.Version)
+func buildAndPushServerMultiArch(registry string, tag string) {
+	img := fmt.Sprintf("%s/server:%s", registry, tag)
 	must.RunV("docker", "buildx", "create", "--use")
 	must.RunV("docker", "buildx", "bake", "-f", "docker-bake.json", "--push", "--set", "server.tags="+img, "server")
 }