cli: reduce uses of pkg/errors for stdlib errors

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: thaJeztah

cli/cobra.go

@@ -12,7 +12,6 @@ import (
 	"github.com/fvbommel/sortorder"
 	"github.com/moby/term"
 	"github.com/morikuni/aec"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 )
@@ -204,7 +203,7 @@ var helpCommand = &cobra.Command{
 	RunE: func(c *cobra.Command, args []string) error {
 		cmd, args, e := c.Root().Find(args)
 		if cmd == nil || e != nil || len(args) > 0 {
-			return errors.Errorf("unknown help topic: %v", strings.Join(args, " "))
+			return fmt.Errorf("unknown help topic: %v", strings.Join(args, " "))
 		}
 		helpFunc := cmd.HelpFunc()
 		helpFunc(cmd, args)

cli/command/cli.go

@@ -5,6 +5,7 @@ package command
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -26,7 +27,6 @@ import (
 	"github.com/moby/moby/api/types/build"
 	"github.com/moby/moby/api/types/swarm"
 	"github.com/moby/moby/client"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -168,7 +168,7 @@ func (cli *DockerCli) BuildKitEnabled() (bool, error) {
 	if v := os.Getenv("DOCKER_BUILDKIT"); v != "" {
 		enabled, err := strconv.ParseBool(v)
 		if err != nil {
-			return false, errors.Wrap(err, "DOCKER_BUILDKIT environment variable expects boolean value")
+			return false, fmt.Errorf("DOCKER_BUILDKIT environment variable expects boolean value: %w", err)
 		}
 		return enabled, nil
 	}
@@ -299,7 +299,7 @@ func NewAPIClientFromFlags(opts *cliflags.ClientOptions, configFile *configfile.
 	}
 	endpoint, err := resolveDockerEndpoint(contextStore, resolveContextName(opts, configFile))
 	if err != nil {
-		return nil, errors.Wrap(err, "unable to resolve docker endpoint")
+		return nil, fmt.Errorf("unable to resolve docker endpoint: %w", err)
 	}
 	return newAPIClientFromEndpoint(endpoint, configFile)
 }
@@ -478,7 +478,7 @@ func (cli *DockerCli) initialize() error {
 	cli.init.Do(func() {
 		cli.dockerEndpoint, cli.initErr = cli.getDockerEndPoint()
 		if cli.initErr != nil {
-			cli.initErr = errors.Wrap(cli.initErr, "unable to resolve docker endpoint")
+			cli.initErr = fmt.Errorf("unable to resolve docker endpoint: %w", cli.initErr)
 			return
 		}
 		if cli.client == nil {
@@ -546,7 +546,7 @@ func getServerHost(hosts []string, defaultToTLS bool) (string, error) {
 	case 1:
 		return dopts.ParseHost(defaultToTLS, hosts[0])
 	default:
-		return "", errors.New("Specify only one -H")
+		return "", errors.New("specify only one -H")
 	}
 }
 

cli/command/cli_options.go

@@ -3,6 +3,7 @@ package command
 import (
 	"context"
 	"encoding/csv"
+	"fmt"
 	"io"
 	"net/http"
 	"os"
@@ -12,7 +13,6 @@ import (
 	"github.com/docker/cli/cli/streams"
 	"github.com/moby/moby/client"
 	"github.com/moby/term"
-	"github.com/pkg/errors"
 )
 
 // CLIOption is a functional argument to apply options to a [DockerCli]. These
@@ -189,7 +189,7 @@ func withCustomHeadersFromEnv() client.Opt {
 		csvReader := csv.NewReader(strings.NewReader(value))
 		fields, err := csvReader.Read()
 		if err != nil {
-			return invalidParameter(errors.Errorf(
+			return invalidParameter(fmt.Errorf(
 				"failed to parse custom headers from %s environment variable: value must be formatted as comma-separated key=value pairs",
 				envOverrideHTTPHeaders,
 			))
@@ -206,7 +206,7 @@ func withCustomHeadersFromEnv() client.Opt {
 			k = strings.TrimSpace(k)
 
 			if k == "" {
-				return invalidParameter(errors.Errorf(
+				return invalidParameter(fmt.Errorf(
 					`failed to set custom headers from %s environment variable: value contains a key=value pair with an empty key: '%s'`,
 					envOverrideHTTPHeaders, kv,
 				))
@@ -217,7 +217,7 @@ func withCustomHeadersFromEnv() client.Opt {
 			// from an environment variable with the same name). In the meantime,
 			// produce an error to prevent users from depending on this.
 			if !hasValue {
-				return invalidParameter(errors.Errorf(
+				return invalidParameter(fmt.Errorf(
 					`failed to set custom headers from %s environment variable: missing "=" in key=value pair: '%s'`,
 					envOverrideHTTPHeaders, kv,
 				))

cli/command/config/create.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 
@@ -11,7 +12,6 @@ import (
 	"github.com/docker/cli/opts"
 	"github.com/moby/moby/api/types/swarm"
 	"github.com/moby/sys/sequential"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -53,7 +53,7 @@ func RunConfigCreate(ctx context.Context, dockerCLI command.Cli, options CreateO
 
 	configData, err := readConfigData(dockerCLI.In(), options.File)
 	if err != nil {
-		return errors.Errorf("Error reading content from %q: %v", options.File, err)
+		return fmt.Errorf("error reading content from %q: %v", options.File, err)
 	}
 
 	spec := swarm.ConfigSpec{

cli/command/container/attach.go

@@ -2,6 +2,7 @@ package container
 
 import (
 	"context"
+	"errors"
 	"io"
 
 	"github.com/docker/cli/cli"
@@ -10,7 +11,6 @@ import (
 	"github.com/moby/moby/api/types/container"
 	"github.com/moby/moby/client"
 	"github.com/moby/sys/signal"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
@@ -28,13 +28,13 @@ func inspectContainerAndCheckState(ctx context.Context, apiClient client.APIClie
 		return nil, err
 	}
 	if !c.State.Running {
-		return nil, errors.New("You cannot attach to a stopped container, start it first")
+		return nil, errors.New("cannot attach to a stopped container, start it first")
 	}
 	if c.State.Paused {
-		return nil, errors.New("You cannot attach to a paused container, unpause it first")
+		return nil, errors.New("cannot attach to a paused container, unpause it first")
 	}
 	if c.State.Restarting {
-		return nil, errors.New("You cannot attach to a restarting container, wait until it is running")
+		return nil, errors.New("cannot attach to a restarting container, wait until it is running")
 	}
 
 	return &c, nil

cli/command/container/attach_test.go

@@ -29,7 +29,7 @@ func TestNewAttachCommandErrors(t *testing.T) {
 		{
 			name:          "client-stopped",
 			args:          []string{"5cb5bb5e4a3b"},
-			expectedError: "You cannot attach to a stopped container",
+			expectedError: "cannot attach to a stopped container",
 			containerInspectFunc: func(containerID string) (container.InspectResponse, error) {
 				return container.InspectResponse{
 					ContainerJSONBase: &container.ContainerJSONBase{
@@ -43,7 +43,7 @@ func TestNewAttachCommandErrors(t *testing.T) {
 		{
 			name:          "client-paused",
 			args:          []string{"5cb5bb5e4a3b"},
-			expectedError: "You cannot attach to a paused container",
+			expectedError: "cannot attach to a paused container",
 			containerInspectFunc: func(containerID string) (container.InspectResponse, error) {
 				return container.InspectResponse{
 					ContainerJSONBase: &container.ContainerJSONBase{
@@ -58,7 +58,7 @@ func TestNewAttachCommandErrors(t *testing.T) {
 		{
 			name:          "client-restarting",
 			args:          []string{"5cb5bb5e4a3b"},
-			expectedError: "You cannot attach to a restarting container",
+			expectedError: "cannot attach to a restarting container",
 			containerInspectFunc: func(containerID string) (container.InspectResponse, error) {
 				return container.InspectResponse{
 					ContainerJSONBase: &container.ContainerJSONBase{

cli/command/container/cp.go

@@ -3,6 +3,7 @@ package container
 import (
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -19,7 +20,6 @@ import (
 	"github.com/moby/go-archive"
 	"github.com/moby/moby/api/types/container"
 	"github.com/morikuni/aec"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -331,7 +331,7 @@ func copyToContainer(ctx context.Context, dockerCLI command.Cli, copyConfig cpCo
 
 	// Validate the destination path
 	if err := command.ValidateOutputPathFileMode(dstStat.Mode); err != nil {
-		return errors.Wrapf(err, `destination "%s:%s" must be a directory or a regular file`, copyConfig.container, dstPath)
+		return fmt.Errorf(`destination "%s:%s" must be a directory or a regular file: %w`, copyConfig.container, dstPath, err)
 	}
 
 	// Ignore any error and assume that the parent directory of the destination
@@ -354,7 +354,7 @@ func copyToContainer(ctx context.Context, dockerCLI command.Cli, copyConfig cpCo
 		content = os.Stdin
 		resolvedDstPath = dstInfo.Path
 		if !dstInfo.IsDir {
-			return errors.Errorf("destination \"%s:%s\" must be a directory", copyConfig.container, dstPath)
+			return fmt.Errorf(`destination "%s:%s" must be a directory`, copyConfig.container, dstPath)
 		}
 	} else {
 		// Prepare source copy info.

cli/command/container/create.go

@@ -4,6 +4,7 @@ import (
 	"archive/tar"
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"net/netip"
@@ -30,7 +31,6 @@ import (
 	"github.com/moby/moby/api/types/versions"
 	"github.com/moby/moby/client"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 )
@@ -80,7 +80,7 @@ func NewCreateCommand(dockerCli command.Cli) *cobra.Command {
 	flags.StringVar(&options.pull, "pull", PullImageMissing, `Pull image before creating ("`+PullImageAlways+`", "|`+PullImageMissing+`", "`+PullImageNever+`")`)
 	flags.BoolVarP(&options.quiet, "quiet", "q", false, "Suppress the pull output")
 	flags.BoolVarP(&options.useAPISocket, "use-api-socket", "", false, "Bind mount Docker API socket and required auth")
-	flags.SetAnnotation("use-api-socket", "experimentalCLI", nil) // Marks flag as experimental for now.
+	_ = flags.SetAnnotation("use-api-socket", "experimentalCLI", nil) // Mark flag as experimental for now.
 
 	// Add an explicit help that doesn't have a `-h` to prevent the conflict
 	// with hostname
@@ -113,7 +113,7 @@ func runCreate(ctx context.Context, dockerCli command.Cli, flags *pflag.FlagSet,
 		}
 	}
 	proxyConfig := dockerCli.ConfigFile().ParseProxyConfig(dockerCli.Client().DaemonHost(), opts.ConvertKVStringsToMapWithNil(copts.env.GetSlice()))
-	newEnv := []string{}
+	newEnv := make([]string, 0, len(proxyConfig))
 	for k, v := range proxyConfig {
 		if v == nil {
 			newEnv = append(newEnv, k)
@@ -151,7 +151,9 @@ func pullImage(ctx context.Context, dockerCli command.Cli, img string, options *
 	if err != nil {
 		return err
 	}
-	defer responseBody.Close()
+	defer func() {
+		_ = responseBody.Close()
+	}()
 
 	out := dockerCli.Err()
 	if options.quiet {
@@ -170,13 +172,13 @@ func (cid *cidFile) Close() error {
 	if cid.file == nil {
 		return nil
 	}
-	cid.file.Close()
+	_ = cid.file.Close()
 
 	if cid.written {
 		return nil
 	}
 	if err := os.Remove(cid.path); err != nil {
-		return errors.Wrapf(err, "failed to remove the CID file '%s'", cid.path)
+		return fmt.Errorf("failed to remove the CID file '%s': %w", cid.path, err)
 	}
 
 	return nil
@@ -187,7 +189,7 @@ func (cid *cidFile) Write(id string) error {
 		return nil
 	}
 	if _, err := cid.file.Write([]byte(id)); err != nil {
-		return errors.Wrap(err, "failed to write the container ID to the file")
+		return fmt.Errorf("failed to write the container ID to the file: %w", err)
 	}
 	cid.written = true
 	return nil
@@ -198,12 +200,12 @@ func newCIDFile(cidPath string) (*cidFile, error) {
 		return &cidFile{}, nil
 	}
 	if _, err := os.Stat(cidPath); err == nil {
-		return nil, errors.Errorf("container ID file found, make sure the other container isn't running or delete %s", cidPath)
+		return nil, errors.New("container ID file found, make sure the other container isn't running or delete " + cidPath)
 	}
 
 	f, err := os.Create(cidPath)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to create the container ID file")
+		return nil, fmt.Errorf("failed to create the container ID file: %w", err)
 	}
 
 	return &cidFile{path: cidPath, file: f}, nil
@@ -224,7 +226,9 @@ func createContainer(ctx context.Context, dockerCli command.Cli, containerCfg *c
 	if err != nil {
 		return "", err
 	}
-	defer containerIDFile.Close()
+	defer func() {
+		_ = containerIDFile.Close()
+	}()
 
 	ref, err := reference.ParseAnyReference(config.Image)
 	if err != nil {
@@ -318,7 +322,7 @@ func createContainer(ctx context.Context, dockerCli command.Cli, containerCfg *c
 	if options.platform != "" && versions.GreaterThanOrEqualTo(dockerCli.Client().ClientVersion(), "1.41") {
 		p, err := platforms.Parse(options.platform)
 		if err != nil {
-			return "", errors.Wrap(invalidParameter(err), "error parsing specified platform")
+			return "", invalidParameter(fmt.Errorf("error parsing specified platform: %w", err))
 		}
 		platform = &p
 	}
@@ -431,7 +435,7 @@ func copyDockerConfigIntoContainer(ctx context.Context, dockerAPI client.APIClie
 	// We don't need to get super fancy with the tar creation.
 	var tarBuf bytes.Buffer
 	tarWriter := tar.NewWriter(&tarBuf)
-	tarWriter.WriteHeader(&tar.Header{
+	_ = tarWriter.WriteHeader(&tar.Header{
 		Name: configPath,
 		Size: int64(configBuf.Len()),
 		Mode: 0o600,

cli/command/defaultcontextstore.go

@@ -4,10 +4,12 @@
 package command
 
 import (
+	"errors"
+	"fmt"
+
 	"github.com/docker/cli/cli/context/docker"
 	"github.com/docker/cli/cli/context/store"
 	cliflags "github.com/docker/cli/cli/flags"
-	"github.com/pkg/errors"
 )
 
 const (
@@ -185,7 +187,7 @@ func (s *ContextStoreWithDefault) GetTLSData(contextName, endpointName, fileName
 			return nil, err
 		}
 		if defaultContext.TLS.Endpoints[endpointName].Files[fileName] == nil {
-			return nil, notFound(errors.Errorf("TLS data for %s/%s/%s does not exist", DefaultContextName, endpointName, fileName))
+			return nil, notFound(fmt.Errorf("TLS data for %s/%s/%s does not exist", DefaultContextName, endpointName, fileName))
 		}
 		return defaultContext.TLS.Endpoints[endpointName].Files[fileName], nil
 	}