Merge pull request #31 from tonistiigi/platforms-fixes

fixes for managing platforms

build/build.go

@@ -62,7 +62,7 @@ type Inputs struct {
 type DriverInfo struct {
 	Driver   driver.Driver
 	Name     string
-	Platform []string // TODO: specs.Platform
+	Platform []specs.Platform
 	Err      error
 }
 

build/platform.go

@@ -1,32 +0,0 @@
-package build
-
-import (
-	"strings"
-
-	"github.com/containerd/containerd/platforms"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
-)
-
-func ParsePlatformSpecs(platformsStr []string) ([]specs.Platform, error) {
-	if len(platformsStr) == 0 {
-		return nil, nil
-	}
-	out := make([]specs.Platform, 0, len(platformsStr))
-	for _, s := range platformsStr {
-		parts := strings.Split(s, ",")
-		if len(parts) > 1 {
-			p, err := ParsePlatformSpecs(parts)
-			if err != nil {
-				return nil, err
-			}
-			out = append(out, p...)
-			continue
-		}
-		p, err := platforms.Parse(s)
-		if err != nil {
-			return nil, err
-		}
-		out = append(out, platforms.Normalize(p))
-	}
-	return out, nil
-}