diff --git a/builder/builder.go b/builder/builder.go
index 55476ea1..67bf2c62 100644
--- a/builder/builder.go
+++ b/builder/builder.go
@@ -1,292 +1,292 @@
-package builder
-
-import (
-	"context"
-	"os"
-	"sort"
-	"sync"
-
-	"github.com/docker/buildx/driver"
-	"github.com/docker/buildx/store"
-	"github.com/docker/buildx/store/storeutil"
-	"github.com/docker/buildx/util/dockerutil"
-	"github.com/docker/buildx/util/imagetools"
-	"github.com/docker/buildx/util/progress"
-	"github.com/docker/cli/cli/command"
-	"github.com/pkg/errors"
-	"golang.org/x/sync/errgroup"
-)
-
-// Builder represents an active builder object
-type Builder struct {
-	*store.NodeGroup
-	driverFactory driverFactory
-	nodes         []Node
-	opts          builderOpts
-	err           error
-}
-
-type builderOpts struct {
-	dockerCli       command.Cli
-	name            string
-	txn             *store.Txn
-	contextPathHash string
-	validate        bool
-}
-
-// Option provides a variadic option for configuring the builder.
-type Option func(b *Builder)
-
-// WithName sets builder name.
-func WithName(name string) Option {
-	return func(b *Builder) {
-		b.opts.name = name
-	}
-}
-
-// WithStore sets a store instance used at init.
-func WithStore(txn *store.Txn) Option {
-	return func(b *Builder) {
-		b.opts.txn = txn
-	}
-}
-
-// WithContextPathHash is used for determining pods in k8s driver instance.
-func WithContextPathHash(contextPathHash string) Option {
-	return func(b *Builder) {
-		b.opts.contextPathHash = contextPathHash
-	}
-}
-
-// WithSkippedValidation skips builder context validation.
-func WithSkippedValidation() Option {
-	return func(b *Builder) {
-		b.opts.validate = false
-	}
-}
-
-// New initializes a new builder client
-func New(dockerCli command.Cli, opts ...Option) (_ *Builder, err error) {
-	b := &Builder{
-		opts: builderOpts{
-			dockerCli: dockerCli,
-			validate:  true,
-		},
-	}
-	for _, opt := range opts {
-		opt(b)
-	}
-
-	if b.opts.txn == nil {
-		// if store instance is nil we create a short-lived one using the
-		// default store and ensure we release it on completion
-		var release func()
-		b.opts.txn, release, err = storeutil.GetStore(dockerCli)
-		if err != nil {
-			return nil, err
-		}
-		defer release()
-	}
-
-	if b.opts.name != "" {
-		if b.NodeGroup, err = storeutil.GetNodeGroup(b.opts.txn, dockerCli, b.opts.name); err != nil {
-			return nil, err
-		}
-	} else {
-		if b.NodeGroup, err = storeutil.GetCurrentInstance(b.opts.txn, dockerCli); err != nil {
-			return nil, err
-		}
-	}
-	if b.opts.validate {
-		if err = b.Validate(); err != nil {
-			return nil, err
-		}
-	}
-
-	return b, nil
-}
-
-// Validate validates builder context
-func (b *Builder) Validate() error {
-	if b.NodeGroup.DockerContext {
-		list, err := b.opts.dockerCli.ContextStore().List()
-		if err != nil {
-			return err
-		}
-		currentContext := b.opts.dockerCli.CurrentContext()
-		for _, l := range list {
-			if l.Name == b.Name && l.Name != currentContext {
-				return errors.Errorf("use `docker --context=%s buildx` to switch to context %q", l.Name, l.Name)
-			}
-		}
-	}
-	return nil
-}
-
-// ContextName returns builder context name if available.
-func (b *Builder) ContextName() string {
-	ctxbuilders, err := b.opts.dockerCli.ContextStore().List()
-	if err != nil {
-		return ""
-	}
-	for _, cb := range ctxbuilders {
-		if b.NodeGroup.Driver == "docker" && len(b.NodeGroup.Nodes) == 1 && b.NodeGroup.Nodes[0].Endpoint == cb.Name {
-			return cb.Name
-		}
-	}
-	return ""
-}
-
-// ImageOpt returns registry auth configuration
-func (b *Builder) ImageOpt() (imagetools.Opt, error) {
-	return storeutil.GetImageConfig(b.opts.dockerCli, b.NodeGroup)
-}
-
-// Boot bootstrap a builder
-func (b *Builder) Boot(ctx context.Context) (bool, error) {
-	toBoot := make([]int, 0, len(b.nodes))
-	for idx, d := range b.nodes {
-		if d.Err != nil || d.Driver == nil || d.DriverInfo == nil {
-			continue
-		}
-		if d.DriverInfo.Status != driver.Running {
-			toBoot = append(toBoot, idx)
-		}
-	}
-	if len(toBoot) == 0 {
-		return false, nil
-	}
-
-	printer, err := progress.NewPrinter(context.TODO(), os.Stderr, os.Stderr, progress.PrinterModeAuto)
-	if err != nil {
-		return false, err
-	}
-
-	baseCtx := ctx
-	eg, _ := errgroup.WithContext(ctx)
-	for _, idx := range toBoot {
-		func(idx int) {
-			eg.Go(func() error {
-				pw := progress.WithPrefix(printer, b.NodeGroup.Nodes[idx].Name, len(toBoot) > 1)
-				_, err := driver.Boot(ctx, baseCtx, b.nodes[idx].Driver, pw)
-				if err != nil {
-					b.nodes[idx].Err = err
-				}
-				return nil
-			})
-		}(idx)
-	}
-
-	err = eg.Wait()
-	err1 := printer.Wait()
-	if err == nil {
-		err = err1
-	}
-
-	return true, err
-}
-
-// Inactive checks if all nodes are inactive for this builder.
-func (b *Builder) Inactive() bool {
-	for _, d := range b.nodes {
-		if d.DriverInfo != nil && d.DriverInfo.Status == driver.Running {
-			return false
-		}
-	}
-	return true
-}
-
-// Err returns error if any.
-func (b *Builder) Err() error {
-	return b.err
-}
-
-type driverFactory struct {
-	driver.Factory
-	once sync.Once
-}
-
-// Factory returns the driver factory.
-func (b *Builder) Factory(ctx context.Context) (_ driver.Factory, err error) {
-	b.driverFactory.once.Do(func() {
-		if b.Driver != "" {
-			b.driverFactory.Factory, err = driver.GetFactory(b.Driver, true)
-			if err != nil {
-				return
-			}
-		} else {
-			// empty driver means nodegroup was implicitly created as a default
-			// driver for a docker context and allows falling back to a
-			// docker-container driver for older daemon that doesn't support
-			// buildkit (< 18.06).
-			ep := b.NodeGroup.Nodes[0].Endpoint
-			var dockerapi *dockerutil.ClientAPI
-			dockerapi, err = dockerutil.NewClientAPI(b.opts.dockerCli, b.NodeGroup.Nodes[0].Endpoint)
-			if err != nil {
-				return
-			}
-			// check if endpoint is healthy is needed to determine the driver type.
-			// if this fails then can't continue with driver selection.
-			if _, err = dockerapi.Ping(ctx); err != nil {
-				return
-			}
-			b.driverFactory.Factory, err = driver.GetDefaultFactory(ctx, ep, dockerapi, false)
-			if err != nil {
-				return
-			}
-			b.Driver = b.driverFactory.Factory.Name()
-		}
-	})
-	return b.driverFactory.Factory, err
-}
-
-// GetBuilders returns all builders
-func GetBuilders(dockerCli command.Cli, txn *store.Txn) ([]*Builder, error) {
-	storeng, err := txn.List()
-	if err != nil {
-		return nil, err
-	}
-
-	builders := make([]*Builder, len(storeng))
-	seen := make(map[string]struct{})
-	for i, ng := range storeng {
-		b, err := New(dockerCli,
-			WithName(ng.Name),
-			WithStore(txn),
-			WithSkippedValidation(),
-		)
-		if err != nil {
-			return nil, err
-		}
-		builders[i] = b
-		seen[b.NodeGroup.Name] = struct{}{}
-	}
-
-	contexts, err := dockerCli.ContextStore().List()
-	if err != nil {
-		return nil, err
-	}
-	sort.Slice(contexts, func(i, j int) bool {
-		return contexts[i].Name < contexts[j].Name
-	})
-
-	for _, c := range contexts {
-		// if a context has the same name as an instance from the store, do not
-		// add it to the builders list. An instance from the store takes
-		// precedence over context builders.
-		if _, ok := seen[c.Name]; ok {
-			continue
-		}
-		b, err := New(dockerCli,
-			WithName(c.Name),
-			WithStore(txn),
-			WithSkippedValidation(),
-		)
-		if err != nil {
-			return nil, err
-		}
-		builders = append(builders, b)
-	}
-
-	return builders, nil
-}
+package builder
+
+import (
+	"context"
+	"os"
+	"sort"
+	"sync"
+
+	"github.com/docker/buildx/driver"
+	"github.com/docker/buildx/store"
+	"github.com/docker/buildx/store/storeutil"
+	"github.com/docker/buildx/util/dockerutil"
+	"github.com/docker/buildx/util/imagetools"
+	"github.com/docker/buildx/util/progress"
+	"github.com/docker/cli/cli/command"
+	"github.com/pkg/errors"
+	"golang.org/x/sync/errgroup"
+)
+
+// Builder represents an active builder object
+type Builder struct {
+	*store.NodeGroup
+	driverFactory driverFactory
+	nodes         []Node
+	opts          builderOpts
+	err           error
+}
+
+type builderOpts struct {
+	dockerCli       command.Cli
+	name            string
+	txn             *store.Txn
+	contextPathHash string
+	validate        bool
+}
+
+// Option provides a variadic option for configuring the builder.
+type Option func(b *Builder)
+
+// WithName sets builder name.
+func WithName(name string) Option {
+	return func(b *Builder) {
+		b.opts.name = name
+	}
+}
+
+// WithStore sets a store instance used at init.
+func WithStore(txn *store.Txn) Option {
+	return func(b *Builder) {
+		b.opts.txn = txn
+	}
+}
+
+// WithContextPathHash is used for determining pods in k8s driver instance.
+func WithContextPathHash(contextPathHash string) Option {
+	return func(b *Builder) {
+		b.opts.contextPathHash = contextPathHash
+	}
+}
+
+// WithSkippedValidation skips builder context validation.
+func WithSkippedValidation() Option {
+	return func(b *Builder) {
+		b.opts.validate = false
+	}
+}
+
+// New initializes a new builder client
+func New(dockerCli command.Cli, opts ...Option) (_ *Builder, err error) {
+	b := &Builder{
+		opts: builderOpts{
+			dockerCli: dockerCli,
+			validate:  true,
+		},
+	}
+	for _, opt := range opts {
+		opt(b)
+	}
+
+	if b.opts.txn == nil {
+		// if store instance is nil we create a short-lived one using the
+		// default store and ensure we release it on completion
+		var release func()
+		b.opts.txn, release, err = storeutil.GetStore(dockerCli)
+		if err != nil {
+			return nil, err
+		}
+		defer release()
+	}
+
+	if b.opts.name != "" {
+		if b.NodeGroup, err = storeutil.GetNodeGroup(b.opts.txn, dockerCli, b.opts.name); err != nil {
+			return nil, err
+		}
+	} else {
+		if b.NodeGroup, err = storeutil.GetCurrentInstance(b.opts.txn, dockerCli); err != nil {
+			return nil, err
+		}
+	}
+	if b.opts.validate {
+		if err = b.Validate(); err != nil {
+			return nil, err
+		}
+	}
+
+	return b, nil
+}
+
+// Validate validates builder context
+func (b *Builder) Validate() error {
+	if b.NodeGroup.DockerContext {
+		list, err := b.opts.dockerCli.ContextStore().List()
+		if err != nil {
+			return err
+		}
+		currentContext := b.opts.dockerCli.CurrentContext()
+		for _, l := range list {
+			if l.Name == b.Name && l.Name != currentContext {
+				return errors.Errorf("use `docker --context=%s buildx` to switch to context %q", l.Name, l.Name)
+			}
+		}
+	}
+	return nil
+}
+
+// ContextName returns builder context name if available.
+func (b *Builder) ContextName() string {
+	ctxbuilders, err := b.opts.dockerCli.ContextStore().List()
+	if err != nil {
+		return ""
+	}
+	for _, cb := range ctxbuilders {
+		if b.NodeGroup.Driver == "docker" && len(b.NodeGroup.Nodes) == 1 && b.NodeGroup.Nodes[0].Endpoint == cb.Name {
+			return cb.Name
+		}
+	}
+	return ""
+}
+
+// ImageOpt returns registry auth configuration
+func (b *Builder) ImageOpt() (imagetools.Opt, error) {
+	return storeutil.GetImageConfig(b.opts.dockerCli, b.NodeGroup)
+}
+
+// Boot bootstrap a builder
+func (b *Builder) Boot(ctx context.Context) (bool, error) {
+	toBoot := make([]int, 0, len(b.nodes))
+	for idx, d := range b.nodes {
+		if d.Err != nil || d.Driver == nil || d.DriverInfo == nil {
+			continue
+		}
+		if d.DriverInfo.Status != driver.Running {
+			toBoot = append(toBoot, idx)
+		}
+	}
+	if len(toBoot) == 0 {
+		return false, nil
+	}
+
+	printer, err := progress.NewPrinter(context.TODO(), os.Stderr, os.Stderr, progress.PrinterModeAuto)
+	if err != nil {
+		return false, err
+	}
+
+	baseCtx := ctx
+	eg, _ := errgroup.WithContext(ctx)
+	for _, idx := range toBoot {
+		func(idx int) {
+			eg.Go(func() error {
+				pw := progress.WithPrefix(printer, b.NodeGroup.Nodes[idx].Name, len(toBoot) > 1)
+				_, err := driver.Boot(ctx, baseCtx, b.nodes[idx].Driver, pw)
+				if err != nil {
+					b.nodes[idx].Err = err
+				}
+				return nil
+			})
+		}(idx)
+	}
+
+	err = eg.Wait()
+	err1 := printer.Wait()
+	if err == nil {
+		err = err1
+	}
+
+	return true, err
+}
+
+// Inactive checks if all nodes are inactive for this builder.
+func (b *Builder) Inactive() bool {
+	for _, d := range b.nodes {
+		if d.DriverInfo != nil && d.DriverInfo.Status == driver.Running {
+			return false
+		}
+	}
+	return true
+}
+
+// Err returns error if any.
+func (b *Builder) Err() error {
+	return b.err
+}
+
+type driverFactory struct {
+	driver.Factory
+	once sync.Once
+}
+
+// Factory returns the driver factory.
+func (b *Builder) Factory(ctx context.Context) (_ driver.Factory, err error) {
+	b.driverFactory.once.Do(func() {
+		if b.Driver != "" {
+			b.driverFactory.Factory, err = driver.GetFactory(b.Driver, true)
+			if err != nil {
+				return
+			}
+		} else {
+			// empty driver means nodegroup was implicitly created as a default
+			// driver for a docker context and allows falling back to a
+			// docker-container driver for older daemon that doesn't support
+			// buildkit (< 18.06).
+			ep := b.NodeGroup.Nodes[0].Endpoint
+			var dockerapi *dockerutil.ClientAPI
+			dockerapi, err = dockerutil.NewClientAPI(b.opts.dockerCli, b.NodeGroup.Nodes[0].Endpoint)
+			if err != nil {
+				return
+			}
+			// check if endpoint is healthy is needed to determine the driver type.
+			// if this fails then can't continue with driver selection.
+			if _, err = dockerapi.Ping(ctx); err != nil {
+				return
+			}
+			b.driverFactory.Factory, err = driver.GetDefaultFactory(ctx, ep, dockerapi, false)
+			if err != nil {
+				return
+			}
+			b.Driver = b.driverFactory.Factory.Name()
+		}
+	})
+	return b.driverFactory.Factory, err
+}
+
+// GetBuilders returns all builders
+func GetBuilders(dockerCli command.Cli, txn *store.Txn) ([]*Builder, error) {
+	storeng, err := txn.List()
+	if err != nil {
+		return nil, err
+	}
+
+	builders := make([]*Builder, len(storeng))
+	seen := make(map[string]struct{})
+	for i, ng := range storeng {
+		b, err := New(dockerCli,
+			WithName(ng.Name),
+			WithStore(txn),
+			WithSkippedValidation(),
+		)
+		if err != nil {
+			return nil, err
+		}
+		builders[i] = b
+		seen[b.NodeGroup.Name] = struct{}{}
+	}
+
+	contexts, err := dockerCli.ContextStore().List()
+	if err != nil {
+		return nil, err
+	}
+	sort.Slice(contexts, func(i, j int) bool {
+		return contexts[i].Name < contexts[j].Name
+	})
+
+	for _, c := range contexts {
+		// if a context has the same name as an instance from the store, do not
+		// add it to the builders list. An instance from the store takes
+		// precedence over context builders.
+		if _, ok := seen[c.Name]; ok {
+			continue
+		}
+		b, err := New(dockerCli,
+			WithName(c.Name),
+			WithStore(txn),
+			WithSkippedValidation(),
+		)
+		if err != nil {
+			return nil, err
+		}
+		builders = append(builders, b)
+	}
+
+	return builders, nil
+}