inspect: display builder features

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

Author: crazy-max

commands/inspect.go

@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"github.com/docker/buildx/builder"
+	"github.com/docker/buildx/driver"
 	"github.com/docker/buildx/util/cobrautil/completion"
 	"github.com/docker/buildx/util/platformutil"
 	"github.com/docker/cli/cli"
@@ -92,6 +93,16 @@ func runInspect(dockerCli command.Cli, in inspectOptions) error {
 					fmt.Fprintf(w, "Buildkit:\t%s\n", nodes[i].Version)
 				}
 				fmt.Fprintf(w, "Platforms:\t%s\n", strings.Join(platformutil.FormatInGroups(n.Node.Platforms, n.Platforms), ", "))
+				fmt.Fprintf(w, "Features:\n")
+				features := nodes[i].Driver.Features(ctx)
+				featKeys := make([]string, 0, len(features))
+				for k := range features {
+					featKeys = append(featKeys, string(k))
+				}
+				sort.Strings(featKeys)
+				for _, k := range featKeys {
+					fmt.Fprintf(w, "\t%s:\t%t\n", k, features[driver.Feature(k)])
+				}
 				if len(nodes[i].Labels) > 0 {
 					fmt.Fprintf(w, "Labels:\n")
 					for _, k := range sortedKeys(nodes[i].Labels) {

driver/features.go

@@ -5,7 +5,7 @@ type Feature string
 const OCIExporter Feature = "OCI exporter"
 const DockerExporter Feature = "Docker exporter"
 
-const CacheExport Feature = "cache export"
-const MultiPlatform Feature = "multiple platforms"
+const CacheExport Feature = "Cache export"
+const MultiPlatform Feature = "Multiple platforms"
 
-const HistoryAPI Feature = "history api"
+const HistoryAPI Feature = "History API"