cmd/dockerd: use stdlib errors

cmd/docker/aliases.go

@@ -1,12 +1,12 @@
 package main
 
 import (
+	"fmt"
 	"os"
 	"strings"
 
 	pluginmanager "github.com/docker/cli/cli-plugins/manager"
 	"github.com/docker/cli/cli/command"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -26,11 +26,11 @@ func processAliases(dockerCli command.Cli, cmd *cobra.Command, args, osArgs []st
 
 	for k, v := range aliasMap {
 		if _, ok := allowedAliases[k]; !ok {
-			return args, osArgs, envs, errors.Errorf("not allowed to alias %q (allowed: %#v)", k, allowedAliases)
+			return args, osArgs, envs, fmt.Errorf("not allowed to alias %q (allowed: %#v)", k, allowedAliases)
 		}
 		if c, _, err := cmd.Find(strings.Split(v, " ")); err == nil {
 			if !pluginmanager.IsPluginCommand(c) {
-				return args, osArgs, envs, errors.Errorf("not allowed to alias with builtin %q as target", v)
+				return args, osArgs, envs, fmt.Errorf("not allowed to alias with builtin %q as target", v)
 			}
 		}
 		aliases = append(aliases, [2][]string{{k}, {v}})

cmd/docker/builder.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -11,7 +12,6 @@ import (
 	"github.com/docker/cli/cli-plugins/metadata"
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/docker/api/types"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 )
@@ -51,7 +51,7 @@ func processBuilder(dockerCli command.Cli, cmd *cobra.Command, args, osargs []st
 	if v := os.Getenv("DOCKER_BUILDKIT"); v != "" {
 		enabled, err := strconv.ParseBool(v)
 		if err != nil {
-			return args, osargs, nil, errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value")
+			return args, osargs, nil, fmt.Errorf("DOCKER_BUILDKIT environment variable expects boolean value: %w", err)
 		}
 		if !enabled {
 			buildKitDisabled = true

cmd/docker/docker.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -21,7 +22,6 @@ import (
 	platformsignals "github.com/docker/cli/cmd/docker/internal/signals"
 	"github.com/docker/docker/api/types/versions"
 	"github.com/docker/docker/errdefs"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -203,7 +203,7 @@ func setupHelpCommand(dockerCli command.Cli, rootCmd, helpCmd *cobra.Command) {
 				return helpcmd.Run()
 			}
 			if !pluginmanager.IsNotFound(err) {
-				return errors.Errorf("unknown help topic: %v", strings.Join(args, " "))
+				return fmt.Errorf("unknown help topic: %v", strings.Join(args, " "))
 			}
 		}
 		if origRunE != nil {
@@ -593,7 +593,7 @@ func isSupported(cmd *cobra.Command, details versionDetails) error {
 }
 
 func areFlagsSupported(cmd *cobra.Command, details versionDetails) error {
-	errs := []string{}
+	var errs []error
 
 	cmd.Flags().VisitAll(func(f *pflag.Flag) {
 		if !f.Changed || len(f.Annotations) == 0 {
@@ -608,26 +608,23 @@ func areFlagsSupported(cmd *cobra.Command, details versionDetails) error {
 		// See commit b39739123b845f872549e91be184cc583f5b387c for details.
 
 		if _, ok := f.Annotations["version"]; ok && !isVersionSupported(f, details.CurrentVersion()) {
-			errs = append(errs, fmt.Sprintf(`"--%s" requires API version %s, but the Docker daemon API version is %s`, f.Name, getFlagAnnotation(f, "version"), details.CurrentVersion()))
+			errs = append(errs, fmt.Errorf(`"--%s" requires API version %s, but the Docker daemon API version is %s`, f.Name, getFlagAnnotation(f, "version"), details.CurrentVersion()))
 			return
 		}
 		if _, ok := f.Annotations["ostype"]; ok && !isOSTypeSupported(f, details.ServerInfo().OSType) {
-			errs = append(errs, fmt.Sprintf(
+			errs = append(errs, fmt.Errorf(
 				`"--%s" is only supported on a Docker daemon running on %s, but the Docker daemon is running on %s`,
 				f.Name,
 				getFlagAnnotation(f, "ostype"), details.ServerInfo().OSType),
 			)
 			return
 		}
 		if _, ok := f.Annotations["experimental"]; ok && !details.ServerInfo().HasExperimental {
-			errs = append(errs, fmt.Sprintf(`"--%s" is only supported on a Docker daemon with experimental features enabled`, f.Name))
+			errs = append(errs, fmt.Errorf(`"--%s" is only supported on a Docker daemon with experimental features enabled`, f.Name))
 		}
 		// buildkit-specific flags are noop when buildkit is not enabled, so we do not add an error in that case
 	})
-	if len(errs) > 0 {
-		return errors.New(strings.Join(errs, "\n"))
-	}
-	return nil
+	return errors.Join(errs...)
 }
 
 // Check recursively so that, e.g., `docker stack ls` returns the same output as `docker stack`

cmd/docker/docker_test.go

@@ -3,6 +3,7 @@ package main
 import (
 	"bytes"
 	"context"
+	"errors"
 	"io"
 	"os"
 	"syscall"
@@ -12,7 +13,6 @@ import (
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/debug"
 	platformsignals "github.com/docker/cli/cmd/docker/internal/signals"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"gotest.tools/v3/assert"
 	is "gotest.tools/v3/assert/cmp"