install/uninstall: allow aliasing buildx to `docker builder`

Currently the user can type `docker buildx` to use this tool.
This patch allows the user to install buildx as a `docker builder` alias.

As an additional benefit, this allows the regular `docker build` to hook
into `buildx build`.

Note that the install and uninstall commands are currently hidden.

Signed-off-by: Tibor Vass <tibor@docker.com>

Dockerfile

@@ -35,7 +35,8 @@ COPY . .
 FROM golang:1.12-alpine AS docker-cli-build
 RUN apk add -U git bash coreutils gcc musl-dev
 ENV CGO_ENABLED=0
-ARG REPO=github.com/docker/cli
+ARG REPO=github.com/tiborvass/cli
+ARG BRANCH=cli-plugin-aliases
 ARG CLI_VERSION
 WORKDIR /go/src/github.com/docker/cli
 RUN git clone git://$REPO . && git checkout $BRANCH
@@ -58,7 +59,7 @@ RUN mkdir -p /usr/local/lib/docker/cli-plugins && ln -s /usr/local/bin/buildx /u
 COPY ./hack/demo-env/entrypoint.sh /usr/local/bin
 COPY ./hack/demo-env/tmux.conf /root/.tmux.conf
 COPY --from=dockerd-release /usr/local/bin /usr/local/bin
-#COPY --from=docker-cli-build /go/src/github.com/docker/cli/build/docker /usr/local/bin
+COPY --from=docker-cli-build /go/src/github.com/docker/cli/build/docker /usr/local/bin
 
 WORKDIR /work
 COPY ./hack/demo-env/examples .

commands/install.go

@@ -0,0 +1,52 @@
+package commands
+
+import (
+	"os"
+
+	"github.com/docker/cli/cli"
+	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/config"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+type installOptions struct {
+}
+
+func runInstall(dockerCli command.Cli, in installOptions) error {
+	dir := config.Dir()
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return errors.Wrap(err, "could not create docker config")
+	}
+
+	cfg, err := config.Load(dir)
+	if err != nil {
+		return err
+	}
+
+	if cfg.Aliases == nil {
+		cfg.Aliases = map[string]string{}
+	}
+	cfg.Aliases["builder"] = "buildx"
+
+	if err := cfg.Save(); err != nil {
+		return errors.Wrap(err, "could not write docker config")
+	}
+	return nil
+}
+
+func installCmd(dockerCli command.Cli) *cobra.Command {
+	var options installOptions
+
+	cmd := &cobra.Command{
+		Use:   "install",
+		Short: "Install buildx as a 'docker builder' alias",
+		Args:  cli.ExactArgs(0),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return runInstall(dockerCli, options)
+		},
+		Hidden: true,
+	}
+
+	return cmd
+}

commands/root.go

@@ -32,6 +32,8 @@ func addCommands(cmd *cobra.Command, dockerCli command.Cli) {
 		useCmd(dockerCli),
 		inspectCmd(dockerCli),
 		stopCmd(dockerCli),
+		installCmd(dockerCli),
+		uninstallCmd(dockerCli),
 		imagetoolscmd.RootCmd(dockerCli),
 	)
 }

commands/uninstall.go

@@ -0,0 +1,58 @@
+package commands
+
+import (
+	"os"
+
+	"github.com/docker/cli/cli"
+	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/config"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+type uninstallOptions struct {
+}
+
+func runUninstall(dockerCli command.Cli, in uninstallOptions) error {
+	dir := config.Dir()
+	cfg, err := config.Load(dir)
+	if err != nil {
+		return errors.Wrap(err, "could not load docker config to uninstall 'docker builder' alias")
+	}
+	// config.Load does not return an error if config file does not exist
+	// so let's detect that case, to avoid writing an empty config to disk.
+	if _, err := os.Stat(cfg.Filename); err != nil {
+		if !os.IsNotExist(err) {
+			// should never happen, already handled in config.Load
+			return errors.Wrap(err, "unexpected error loading docker config")
+		}
+		// no-op
+		return nil
+	}
+
+	delete(cfg.Aliases, "builder")
+	if len(cfg.Aliases) == 0 {
+		cfg.Aliases = nil
+	}
+
+	if err := cfg.Save(); err != nil {
+		return errors.Wrap(err, "could not write docker config")
+	}
+	return nil
+}
+
+func uninstallCmd(dockerCli command.Cli) *cobra.Command {
+	var options uninstallOptions
+
+	cmd := &cobra.Command{
+		Use:   "uninstall",
+		Short: "Uninstall the 'docker builder' alias",
+		Args:  cli.ExactArgs(0),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return runUninstall(dockerCli, options)
+		},
+		Hidden: true,
+	}
+
+	return cmd
+}

go.mod

@@ -95,3 +95,5 @@ require (
 )
 
 replace github.com/jaguilar/vt100 => github.com/tonistiigi/vt100 v0.0.0-20190402012908-ad4c4a574305
+
+replace github.com/docker/cli => github.com/tiborvass/cli v0.0.0-20190419012645-1ed02c40fe68

go.sum

@@ -63,8 +63,6 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/denisenkom/go-mssqldb v0.0.0-20190315220205-a8ed825ac853 h1:tTngnoO/B6HQnJ+pK8tN7kEAhmhIfaJOutqq/A4/JTM=
 github.com/denisenkom/go-mssqldb v0.0.0-20190315220205-a8ed825ac853/go.mod h1:xN/JuLBIz4bjkxNmByTiV1IbhfnYb6oo99phBn4Eqhc=
-github.com/docker/cli v0.0.0-20190321234815-f40f9c240ab0 h1:E7NTtHfZYV+iu35yZ49AbrxqhMHpiOl3FstDYm38vQ0=
-github.com/docker/cli v0.0.0-20190321234815-f40f9c240ab0/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/compose-on-kubernetes v0.4.19-0.20190128150448-356b2919c496 h1:90ytrX1dbzL7Uf/hHiuWwvywC+gikHv4hkAy4CwRTbs=
 github.com/docker/compose-on-kubernetes v0.4.19-0.20190128150448-356b2919c496/go.mod h1:iT2pYfi580XlpaV4KmK0T6+4/9+XoKmk/fhoDod1emE=
 github.com/docker/distribution v2.7.1-0.20190205005809-0d3efadf0154+incompatible h1:dvc1KSkIYTVjZgHf/CTC2diTYC8PzhaA5sFISRfNVrE=
@@ -256,6 +254,8 @@ github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2 h1:b6uOv7YOFK0
 github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/theupdateframework/notary v0.6.1 h1:7wshjstgS9x9F5LuB1L5mBI2xNMObWqjz+cjWoom6l0=
 github.com/theupdateframework/notary v0.6.1/go.mod h1:MOfgIfmox8s7/7fduvB2xyPPMJCrjRLRizA8OFwpnKY=
+github.com/tiborvass/cli v0.0.0-20190419012645-1ed02c40fe68 h1:NYTot8AmowoFRqpczwLpi7JRKJblipjgfXh3XE+hi5o=
+github.com/tiborvass/cli v0.0.0-20190419012645-1ed02c40fe68/go.mod h1:S/jEQ1OdFvFXmvGs5oicYe8IJS7pBTP99Z0EtGfRs8s=
 github.com/tonistiigi/fsutil v0.0.0-20190327153851-3bbb99cdbd76 h1:eGfgYrNUSD448sa4mxH6nQpyZfN39QH0mLB7QaKIjus=
 github.com/tonistiigi/fsutil v0.0.0-20190327153851-3bbb99cdbd76/go.mod h1:pzh7kdwkDRh+Bx8J30uqaKJ1M4QrSH/um8fcIXeM8rc=
 github.com/tonistiigi/units v0.0.0-20180711220420-6950e57a87ea h1:SXhTLE6pb6eld/v/cCndK0AMpt1wiVFb/YYmqB3/QG0=

vendor/github.com/docker/cli/cli-plugins/manager/manager.go

@@ -164,6 +164,7 @@ func PluginRunCommand(dockerCli command.Cli, name string, rootcmd *cobra.Command
 			return nil, err
 		}
 		if plugin.Err != nil {
+			// TODO: why are we not returning plugin.Err?
 			return nil, errPluginNotFound(name)
 		}
 		cmd := exec.Command(plugin.Path, args...)

vendor/github.com/docker/cli/cli-plugins/plugin/plugin.go

@@ -40,10 +40,13 @@ func runPlugin(dockerCli *command.DockerCli, plugin *cobra.Command, meta manager
 		return err
 	}
 
-	cmd, _, err := tcmd.HandleGlobalFlags()
+	cmd, args, err := tcmd.HandleGlobalFlags()
 	if err != nil {
 		return err
 	}
+	// We've parsed global args already, so reset args to those
+	// which remain.
+	cmd.SetArgs(args)
 	return cmd.Execute()
 }
 

vendor/github.com/docker/cli/cli/cobra.go

@@ -42,6 +42,10 @@ func setupCommonRootCommand(rootCmd *cobra.Command) (*cliflags.ClientOptions, *p
 	rootCmd.SetFlagErrorFunc(FlagErrorFunc)
 	rootCmd.SetHelpCommand(helpCommand)
 
+	rootCmd.PersistentFlags().BoolP("help", "h", false, "Print usage")
+	rootCmd.PersistentFlags().MarkShorthandDeprecated("help", "please use --help")
+	rootCmd.PersistentFlags().Lookup("help").Hidden = true
+
 	return opts, flags, helpCommand
 }
 
@@ -52,20 +56,12 @@ func SetupRootCommand(rootCmd *cobra.Command) (*cliflags.ClientOptions, *pflag.F
 
 	rootCmd.SetVersionTemplate("Docker version {{.Version}}\n")
 
-	rootCmd.PersistentFlags().BoolP("help", "h", false, "Print usage")
-	rootCmd.PersistentFlags().MarkShorthandDeprecated("help", "please use --help")
-	rootCmd.PersistentFlags().Lookup("help").Hidden = true
-
 	return opts, flags, helpCmd
 }
 
 // SetupPluginRootCommand sets default usage, help and error handling for a plugin root command.
 func SetupPluginRootCommand(rootCmd *cobra.Command) (*cliflags.ClientOptions, *pflag.FlagSet) {
 	opts, flags, _ := setupCommonRootCommand(rootCmd)
-
-	rootCmd.PersistentFlags().BoolP("help", "", false, "Print usage")
-	rootCmd.PersistentFlags().Lookup("help").Hidden = true
-
 	return opts, flags
 }
 

vendor/github.com/docker/cli/cli/command/registry.go

@@ -28,16 +28,22 @@ func ElectAuthServer(ctx context.Context, cli Cli) string {
 	// used. This is essential in cross-platforms environment, where for
 	// example a Linux client might be interacting with a Windows daemon, hence
 	// the default registry URL might be Windows specific.
-	serverAddress := registry.IndexServer
-	if info, err := cli.Client().Info(ctx); err != nil && debug.IsEnabled() {
-		// Only report the warning if we're in debug mode to prevent nagging during engine initialization workflows
-		fmt.Fprintf(cli.Err(), "Warning: failed to get default registry endpoint from daemon (%v). Using system default: %s\n", err, serverAddress)
-	} else if info.IndexServerAddress == "" && debug.IsEnabled() {
-		fmt.Fprintf(cli.Err(), "Warning: Empty registry endpoint from daemon. Using system default: %s\n", serverAddress)
-	} else {
-		serverAddress = info.IndexServerAddress
+	info, err := cli.Client().Info(ctx)
+	if err != nil {
+		// Daemon is not responding so use system default.
+		if debug.IsEnabled() {
+			// Only report the warning if we're in debug mode to prevent nagging during engine initialization workflows
+			fmt.Fprintf(cli.Err(), "Warning: failed to get default registry endpoint from daemon (%v). Using system default: %s\n", err, registry.IndexServer)
+		}
+		return registry.IndexServer
 	}
-	return serverAddress
+	if info.IndexServerAddress == "" {
+		if debug.IsEnabled() {
+			fmt.Fprintf(cli.Err(), "Warning: Empty registry endpoint from daemon. Using system default: %s\n", registry.IndexServer)
+		}
+		return registry.IndexServer
+	}
+	return info.IndexServerAddress
 }
 
 // EncodeAuthToBase64 serializes the auth configuration as JSON base64 payload

vendor/github.com/docker/cli/cli/command/utils.go

@@ -161,3 +161,34 @@ func ValidateOutputPathFileMode(fileMode os.FileMode) error {
 	}
 	return nil
 }
+
+func stringSliceIndex(s, subs []string) int {
+	j := 0
+	if len(subs) > 0 {
+		for i, x := range s {
+			if j < len(subs) && subs[j] == x {
+				j++
+			} else {
+				j = 0
+			}
+			if len(subs) == j {
+				return i + 1 - j
+			}
+		}
+	}
+	return -1
+}
+
+// StringSliceReplaceAt replaces the sub-slice old, with the sub-slice new, in the string
+// slice s, returning a new slice and a boolean indicating if the replacement happened.
+// requireIdx is the index at which old needs to be found at (or -1 to disregard that).
+func StringSliceReplaceAt(s, old, new []string, requireIndex int) ([]string, bool) {
+	idx := stringSliceIndex(s, old)
+	if (requireIndex != -1 && requireIndex != idx) || idx == -1 {
+		return s, false
+	}
+	out := append([]string{}, s[:idx]...)
+	out = append(out, new...)
+	out = append(out, s[idx+len(old):]...)
+	return out, true
+}

vendor/github.com/docker/cli/cli/compose/loader/loader.go

@@ -634,7 +634,8 @@ func LoadConfigObjs(source map[string]interface{}, details types.ConfigDetails)
 
 func loadFileObjectConfig(name string, objType string, obj types.FileObjectConfig, details types.ConfigDetails) (types.FileObjectConfig, error) {
 	// if "external: true"
-	if obj.External.External {
+	switch {
+	case obj.External.External:
 		// handle deprecated external.name
 		if obj.External.Name != "" {
 			if obj.Name != "" {
@@ -651,7 +652,11 @@ func loadFileObjectConfig(name string, objType string, obj types.FileObjectConfi
 			}
 		}
 		// if not "external: true"
-	} else {
+	case obj.Driver != "":
+		if obj.File != "" {
+			return obj, errors.Errorf("%[1]s %[2]s: %[1]s.driver and %[1]s.file conflict; only use %[1]s.driver", objType, name)
+		}
+	default:
 		obj.File = absPath(details.WorkingDir, obj.File)
 	}
 

vendor/github.com/docker/cli/cli/compose/schema/bindata.go

@@ -510,45 +510,45 @@ bnBpPlHfjORjkTRf1wyAwiYqMXd9/G6313QfoXs6/sbZ66r6e179PwAA//8ZL3SpvkUAAA==
 
 	"/data/config_schema_v3.8.json": {
 		local:   "data/config_schema_v3.8.json",
-		size:    18006,
+		size:    18246,
 		modtime: 1518458244,
 		compressed: `
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 `,
 	},
 

vendor/github.com/docker/cli/cli/compose/types/types.go

@@ -500,8 +500,7 @@ func (e External) MarshalJSON() ([]byte, error) {
 
 // CredentialSpecConfig for credential spec on Windows
 type CredentialSpecConfig struct {
-	// @TODO Config is not yet in use
-	Config   string `yaml:"-" json:"-"` // Config was added in API v1.40
+	Config   string `yaml:",omitempty" json:"config,omitempty"` // Config was added in API v1.40
 	File     string `yaml:",omitempty" json:"file,omitempty"`
 	Registry string `yaml:",omitempty" json:"registry,omitempty"`
 }
@@ -513,6 +512,8 @@ type FileObjectConfig struct {
 	External       External               `yaml:",omitempty" json:"external,omitempty"`
 	Labels         Labels                 `yaml:",omitempty" json:"labels,omitempty"`
 	Extras         map[string]interface{} `yaml:",inline" json:"-"`
+	Driver         string                 `yaml:",omitempty" json:"driver,omitempty"`
+	DriverOpts     map[string]string      `mapstructure:"driver_opts" yaml:"driver_opts,omitempty" json:"driver_opts,omitempty"`
 	TemplateDriver string                 `mapstructure:"template_driver" yaml:"template_driver,omitempty" json:"template_driver,omitempty"`
 }
 

vendor/github.com/docker/cli/cli/config/configfile/file.go

@@ -50,6 +50,7 @@ type ConfigFile struct {
 	CurrentContext       string                       `json:"currentContext,omitempty"`
 	CLIPluginsExtraDirs  []string                     `json:"cliPluginsExtraDirs,omitempty"`
 	Plugins              map[string]map[string]string `json:"plugins,omitempty"`
+	Aliases              map[string]string            `json:"aliases,omitempty"`
 }
 
 // ProxyConfig contains proxy configuration settings
@@ -72,6 +73,7 @@ func New(fn string) *ConfigFile {
 		HTTPHeaders: make(map[string]string),
 		Filename:    fn,
 		Plugins:     make(map[string]map[string]string),
+		Aliases:     make(map[string]string),
 	}
 }
 

vendor/github.com/docker/cli/opts/network.go

@@ -15,9 +15,13 @@ const (
 
 // NetworkAttachmentOpts represents the network options for endpoint creation
 type NetworkAttachmentOpts struct {
-	Target     string
-	Aliases    []string
-	DriverOpts map[string]string
+	Target       string
+	Aliases      []string
+	DriverOpts   map[string]string
+	Links        []string // TODO add support for links in the csv notation of `--network`
+	IPv4Address  string   // TODO add support for IPv4-address in the csv notation of `--network`
+	IPv6Address  string   // TODO add support for IPv6-address in the csv notation of `--network`
+	LinkLocalIPs []string // TODO add support for LinkLocalIPs in the csv notation of `--network` ?
 }
 
 // NetworkOpt represents a network config in swarm mode.
@@ -95,6 +99,16 @@ func (n *NetworkOpt) String() string {
 	return ""
 }
 
+// NetworkMode return the network mode for the network option
+func (n *NetworkOpt) NetworkMode() string {
+	networkIDOrName := "default"
+	netOptVal := n.Value()
+	if len(netOptVal) > 0 {
+		networkIDOrName = netOptVal[0].Target
+	}
+	return networkIDOrName
+}
+
 func parseDriverOpt(driverOpt string) (string, string, error) {
 	parts := strings.SplitN(driverOpt, "=", 2)
 	if len(parts) != 2 {

vendor/modules.txt

@@ -95,7 +95,7 @@ github.com/containerd/fifo
 github.com/containerd/typeurl
 # github.com/davecgh/go-spew v1.1.1
 github.com/davecgh/go-spew/spew
-# github.com/docker/cli v0.0.0-20190321234815-f40f9c240ab0
+# github.com/docker/cli v0.0.0-20190321234815-f40f9c240ab0 => github.com/tiborvass/cli v0.0.0-20190419012645-1ed02c40fe68
 github.com/docker/cli/cli/compose/loader
 github.com/docker/cli/cli/compose/types
 github.com/docker/cli/cli-plugins/manager
@@ -103,13 +103,13 @@ github.com/docker/cli/cli-plugins/plugin
 github.com/docker/cli/cli/command
 github.com/docker/cli/cli/flags
 github.com/docker/cli/cli
+github.com/docker/cli/cli/config
 github.com/docker/cli/cli/context/docker
 github.com/docker/cli/opts
 github.com/docker/cli/cli/config/types
 github.com/docker/cli/cli/compose/interpolation
 github.com/docker/cli/cli/compose/schema
 github.com/docker/cli/cli/compose/template
-github.com/docker/cli/cli/config
 github.com/docker/cli/cli/config/configfile
 github.com/docker/cli/cli/connhelper
 github.com/docker/cli/cli/context