Allow specifying DOCKER_CONFIG via --config

pkg/buildx/commands/bake.go

@@ -14,6 +14,7 @@ import (
 	"github.com/depot/cli/pkg/buildx/build"
 	"github.com/depot/cli/pkg/buildx/builder"
 	"github.com/depot/cli/pkg/compose"
+	"github.com/depot/cli/pkg/dockerclient"
 	"github.com/depot/cli/pkg/helpers"
 	"github.com/depot/cli/pkg/load"
 	"github.com/depot/cli/pkg/progresshelper"
@@ -208,14 +209,19 @@ func RunBake(dockerCli command.Cli, in BakeOptions, validator BakeValidator, pri
 	return nil
 }
 
-func BakeCmd(dockerCli command.Cli) *cobra.Command {
+func BakeCmd() *cobra.Command {
 	var options BakeOptions
 
 	cmd := &cobra.Command{
 		Use:     "bake [OPTIONS] [TARGET...]",
 		Aliases: []string{"f"},
 		Short:   "Build from a file",
 		RunE: func(cmd *cobra.Command, args []string) error {
+			dockerCli, err := dockerclient.NewDockerCLI()
+			if err != nil {
+				return err
+			}
+
 			// TODO: remove when upgrading to buildx 0.12
 			for idx, file := range options.files {
 				if strings.HasPrefix(file, "cwd://") {

pkg/buildx/commands/build.go

@@ -25,6 +25,7 @@ import (
 	"github.com/depot/cli/pkg/ci"
 	"github.com/depot/cli/pkg/cmd/docker"
 	"github.com/depot/cli/pkg/debuglog"
+	"github.com/depot/cli/pkg/dockerclient"
 	"github.com/depot/cli/pkg/helpers"
 	"github.com/depot/cli/pkg/load"
 	"github.com/depot/cli/pkg/progresshelper"
@@ -604,7 +605,7 @@ func validateBuildOptions(in *buildOptions) (map[string]build.Options, error) {
 	return map[string]build.Options{defaultTargetName: opts}, nil
 }
 
-func BuildCmd(dockerCli command.Cli) *cobra.Command {
+func BuildCmd() *cobra.Command {
 	options := newBuildOptions()
 
 	cmd := &cobra.Command{
@@ -613,6 +614,11 @@ func BuildCmd(dockerCli command.Cli) *cobra.Command {
 		Short:   "Start a build",
 		Args:    cli.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			dockerCli, err := dockerclient.NewDockerCLI()
+			if err != nil {
+				return err
+			}
+
 			options.contextPath = args[0]
 			cmd.Flags().VisitAll(checkWarnedFlags)
 

pkg/cmd/bake/bake.go

@@ -2,10 +2,9 @@ package init
 
 import (
 	"github.com/depot/cli/pkg/buildx/commands"
-	"github.com/docker/cli/cli/command"
 	"github.com/spf13/cobra"
 )
 
-func NewCmdBake(dockerCli command.Cli) *cobra.Command {
-	return commands.BakeCmd(dockerCli)
+func NewCmdBake() *cobra.Command {
+	return commands.BakeCmd()
 }

pkg/cmd/build/build.go

@@ -3,10 +3,9 @@ package build
 import (
 	"github.com/depot/cli/pkg/buildx/commands"
 	_ "github.com/depot/cli/pkg/buildxdriver"
-	"github.com/docker/cli/cli/command"
 	"github.com/spf13/cobra"
 )
 
-func NewCmdBuild(dockerCli command.Cli) *cobra.Command {
-	return commands.BuildCmd(dockerCli)
+func NewCmdBuild() *cobra.Command {
+	return commands.BuildCmd()
 }

pkg/cmd/docker/docker.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/depot/cli/internal/build"
 	"github.com/depot/cli/pkg/buildx/imagetools"
+	depotdockerclient "github.com/depot/cli/pkg/dockerclient"
 	"github.com/depot/cli/pkg/helpers"
 	"github.com/docker/buildx/store"
 	"github.com/docker/buildx/store/storeutil"
@@ -31,7 +32,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func NewCmdConfigureDocker(dockerCli command.Cli) *cobra.Command {
+func NewCmdConfigureDocker() *cobra.Command {
 	uninstall := false
 	var (
 		project string
@@ -42,6 +43,11 @@ func NewCmdConfigureDocker(dockerCli command.Cli) *cobra.Command {
 		Use:   "configure-docker",
 		Short: "Configure Docker to use Depot for builds",
 		RunE: func(cmd *cobra.Command, args []string) error {
+			dockerCli, err := depotdockerclient.NewDockerCLI()
+			if err != nil {
+				return err
+			}
+
 			dir := config.Dir()
 			if err := os.MkdirAll(dir, 0755); err != nil {
 				return errors.Wrap(err, "could not create docker config")

pkg/cmd/exec/exec.go

@@ -18,11 +18,10 @@ import (
 	cliv1 "github.com/depot/cli/pkg/proto/depot/cli/v1"
 	"github.com/docker/buildx/util/progress"
 	"github.com/docker/cli/cli"
-	"github.com/docker/cli/cli/command"
 	"github.com/spf13/cobra"
 )
 
-func NewCmdExec(dockerCli command.Cli) *cobra.Command {
+func NewCmdExec() *cobra.Command {
 	var (
 		envVar       string
 		token        string

pkg/cmd/pull/pull.go

@@ -7,6 +7,7 @@ import (
 	"connectrpc.com/connect"
 	depotapi "github.com/depot/cli/pkg/api"
 	"github.com/depot/cli/pkg/ci"
+	"github.com/depot/cli/pkg/dockerclient"
 	"github.com/depot/cli/pkg/helpers"
 	"github.com/depot/cli/pkg/load"
 	cliv1 "github.com/depot/cli/pkg/proto/depot/cli/v1"
@@ -17,7 +18,7 @@ import (
 	"golang.org/x/sync/errgroup"
 )
 
-func NewCmdPull(dockerCli command.Cli) *cobra.Command {
+func NewCmdPull() *cobra.Command {
 	var (
 		token     string
 		projectID string
@@ -33,6 +34,11 @@ func NewCmdPull(dockerCli command.Cli) *cobra.Command {
 		Short: "Pull a project's build from the Depot ephemeral registry",
 		Args:  cli.RequiresMaxArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			dockerCli, err := dockerclient.NewDockerCLI()
+			if err != nil {
+				return err
+			}
+
 			if len(args) > 0 {
 				buildID = args[0]
 			}

pkg/cmd/pulltoken/pulltoken.go

@@ -8,11 +8,10 @@ import (
 	"github.com/depot/cli/pkg/helpers"
 	cliv1 "github.com/depot/cli/pkg/proto/depot/cli/v1"
 	"github.com/docker/cli/cli"
-	"github.com/docker/cli/cli/command"
 	"github.com/spf13/cobra"
 )
 
-func NewCmdPullToken(dockerCli command.Cli) *cobra.Command {
+func NewCmdPullToken() *cobra.Command {
 	var (
 		token     string
 		projectID string

pkg/cmd/push/push.go

@@ -8,6 +8,7 @@ import (
 	"github.com/depot/cli/pkg/api"
 	depotapi "github.com/depot/cli/pkg/api"
 	"github.com/depot/cli/pkg/ci"
+	"github.com/depot/cli/pkg/dockerclient"
 	"github.com/depot/cli/pkg/helpers"
 	cliv1 "github.com/depot/cli/pkg/proto/depot/cli/v1"
 	prog "github.com/docker/buildx/util/progress"
@@ -19,7 +20,7 @@ import (
 )
 
 // NewCmdPush pushes a previously saved build to a registry from the Depot ephemeral registry.
-func NewCmdPush(dockerCli command.Cli) *cobra.Command {
+func NewCmdPush() *cobra.Command {
 	var (
 		token       string
 		projectID   string
@@ -34,6 +35,11 @@ func NewCmdPush(dockerCli command.Cli) *cobra.Command {
 		Short: "Push a project's build from the Depot ephemeral registry to a destination registry",
 		Args:  cli.RequiresMaxArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			dockerCli, err := dockerclient.NewDockerCLI()
+			if err != nil {
+				return err
+			}
+
 			if len(args) > 0 {
 				buildID = args[0]
 			}

pkg/cmd/root/root.go

@@ -1,7 +1,6 @@
 package root
 
 import (
-	"fmt"
 	"os"
 
 	"github.com/spf13/cobra"
@@ -22,10 +21,11 @@ import (
 	"github.com/depot/cli/pkg/cmd/registry"
 	versionCmd "github.com/depot/cli/pkg/cmd/version"
 	"github.com/depot/cli/pkg/config"
-	"github.com/depot/cli/pkg/docker"
 )
 
 func NewCmdRoot(version, buildDate string) *cobra.Command {
+	var dockerConfig string
+
 	var cmd = &cobra.Command{
 		Use:          "depot <command> [flags]",
 		Short:        "Depot CLI",
@@ -34,6 +34,12 @@ func NewCmdRoot(version, buildDate string) *cobra.Command {
 		Run: func(cmd *cobra.Command, args []string) {
 			_ = cmd.Usage()
 		},
+
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			if dockerConfig != "" {
+				os.Setenv("DOCKER_CONFIG", dockerConfig)
+			}
+		},
 	}
 
 	// Initialize config
@@ -44,28 +50,25 @@ func NewCmdRoot(version, buildDate string) *cobra.Command {
 	cmd.Version = formattedVersion
 	cmd.Flags().Bool("version", false, "Print the version and exit")
 
-	dockerCli, err := docker.NewDockerCLI()
-	if err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
-	}
+	cmd.PersistentFlags().StringVar(&dockerConfig, "config", "", "Override the location of Docker client config files")
+	_ = cmd.PersistentFlags().MarkHidden("config")
 
 	// Child commands
-	cmd.AddCommand(bakeCmd.NewCmdBake(dockerCli))
-	cmd.AddCommand(buildCmd.NewCmdBuild(dockerCli))
+	cmd.AddCommand(bakeCmd.NewCmdBake())
+	cmd.AddCommand(buildCmd.NewCmdBuild())
 	cmd.AddCommand(cacheCmd.NewCmdCache())
 	cmd.AddCommand(initCmd.NewCmdInit())
 	cmd.AddCommand(list.NewCmdList())
 	cmd.AddCommand(loginCmd.NewCmdLogin())
 	cmd.AddCommand(logout.NewCmdLogout())
-	cmd.AddCommand(pull.NewCmdPull(dockerCli))
-	cmd.AddCommand(pulltoken.NewCmdPullToken(dockerCli))
-	cmd.AddCommand(push.NewCmdPush(dockerCli))
+	cmd.AddCommand(pull.NewCmdPull())
+	cmd.AddCommand(pulltoken.NewCmdPullToken())
+	cmd.AddCommand(push.NewCmdPush())
 	cmd.AddCommand(versionCmd.NewCmdVersion(version, buildDate))
-	cmd.AddCommand(dockerCmd.NewCmdConfigureDocker(dockerCli))
+	cmd.AddCommand(dockerCmd.NewCmdConfigureDocker())
 	cmd.AddCommand(registry.NewCmdRegistry())
 	cmd.AddCommand(projects.NewCmdProjects())
-	cmd.AddCommand(exec.NewCmdExec(dockerCli))
+	cmd.AddCommand(exec.NewCmdExec())
 
 	return cmd
 }

pkg/dockerclient/client.go

@@ -0,0 +1,23 @@
+package dockerclient
+
+import (
+	"github.com/depot/cli/pkg/docker"
+	"github.com/docker/cli/cli/command"
+)
+
+var dockerCli *command.DockerCli
+
+func NewDockerCLI() (*command.DockerCli, error) {
+	if dockerCli != nil {
+		return dockerCli, nil
+	}
+
+	var err error
+	cli, err := docker.NewDockerCLI()
+	if err != nil {
+		return nil, err
+	}
+
+	dockerCli = cli
+	return dockerCli, nil
+}