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debug: Add `buildx debug` command

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Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
pull/2006/head
Kohei Tokunaga 1 year ago
parent 87e8e4b847
commit da87cb4946
No known key found for this signature in database
GPG Key ID: 6CE0A04690DB3FB3
10 changed files with 363 additions and 268 deletions
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294
commands/build.go
Unescape Escape View File

@ -17,6 +17,7 @@ import (
"github.com/containerd/console"
"github.com/docker/buildx/build"
"github.com/docker/buildx/builder"
"github.com/docker/buildx/commands/debug"
"github.com/docker/buildx/controller"
cbuild "github.com/docker/buildx/controller/build"
"github.com/docker/buildx/controller/control"
@ -76,9 +77,6 @@ type buildOptions struct {
target string
ulimits *dockeropts.UlimitOpt
invoke *invokeConfig
noBuild bool
attests []string
sbom string
provenance string
@ -94,6 +92,8 @@ type buildOptions struct {
exportLoad bool
control.ControlOptions
invokeConfig *invokeConfig
}
func (o *buildOptions) toControllerOptions() (*controllerapi.BuildOptions, error) {
@ -320,11 +320,10 @@ func runBasicBuild(ctx context.Context, dockerCli command.Cli, opts *controllera
}
func runControllerBuild(ctx context.Context, dockerCli command.Cli, opts *controllerapi.BuildOptions, options buildOptions, printer *progress.Printer) (*client.SolveResponse, error) {
if options.invoke != nil && (options.dockerfileName == "-" || options.contextPath == "-") {
if options.invokeConfig != nil && (options.dockerfileName == "-" || options.contextPath == "-") {
// stdin must be usable for monitor
return nil, errors.Errorf("Dockerfile or context from stdin is not supported with invoke")
}
c, err := controller.NewController(ctx, options.ControlOptions, dockerCli, printer)
if err != nil {
return nil, err
@ -347,50 +346,39 @@ func runControllerBuild(ctx context.Context, dockerCli command.Cli, opts *contro
var resp *client.SolveResponse
f := ioset.NewSingleForwarder()
f.SetReader(dockerCli.In())
if !options.noBuild {
pr, pw := io.Pipe()
f.SetWriter(pw, func() io.WriteCloser {
pw.Close() // propagate EOF
logrus.Debug("propagating stdin close")
return nil
})
pr, pw := io.Pipe()
f.SetWriter(pw, func() io.WriteCloser {
pw.Close() // propagate EOF
logrus.Debug("propagating stdin close")
return nil
})
ref, resp, err = c.Build(ctx, *opts, pr, printer)
if err != nil {
var be *controllererrors.BuildError
if errors.As(err, &be) {
ref = be.Ref
retErr = err
// We can proceed to monitor
} else {
return nil, errors.Wrapf(err, "failed to build")
}
ref, resp, err = c.Build(ctx, *opts, pr, printer)
if err != nil {
var be *controllererrors.BuildError
if errors.As(err, &be) {
ref = be.Ref
retErr = err
// We can proceed to monitor
} else {
return nil, errors.Wrapf(err, "failed to build")
}
}
if err := pw.Close(); err != nil {
logrus.Debug("failed to close stdin pipe writer")
}
if err := pr.Close(); err != nil {
logrus.Debug("failed to close stdin pipe reader")
}
if err := pw.Close(); err != nil {
logrus.Debug("failed to close stdin pipe writer")
}
if err := pr.Close(); err != nil {
logrus.Debug("failed to close stdin pipe reader")
}
// post-build operations
if options.invoke != nil && options.invoke.needsMonitor(retErr) {
if options.invokeConfig != nil && options.invokeConfig.needsDebug(retErr) {
pr2, pw2 := io.Pipe()
f.SetWriter(pw2, func() io.WriteCloser {
pw2.Close() // propagate EOF
return nil
})
con := console.Current()
if err := con.SetRaw(); err != nil {
if err := c.Disconnect(ctx, ref); err != nil {
logrus.Warnf("disconnect error: %v", err)
}
return nil, errors.Errorf("failed to configure terminal: %v", err)
}
err = monitor.RunMonitor(ctx, ref, opts, options.invoke.InvokeConfig, c, pr2, os.Stdout, os.Stderr, printer)
con.Reset()
err = options.invokeConfig.runDebug(ctx, ref, opts, c, pr2, os.Stdout, os.Stderr, printer)
if err := pw2.Close(); err != nil {
logrus.Debug("failed to close monitor stdin pipe reader")
}
@ -406,10 +394,22 @@ func runControllerBuild(ctx context.Context, dockerCli command.Cli, opts *contro
return resp, retErr
}
func buildCmd(dockerCli command.Cli, rootOpts *rootOptions) *cobra.Command {
options := buildOptions{}
func newDebuggableBuild(dockerCli command.Cli, rootOpts *rootOptions) debug.DebuggableCmd {
return &debuggableBuild{dockerCli: dockerCli, rootOpts: rootOpts}
}
type debuggableBuild struct {
dockerCli command.Cli
rootOpts *rootOptions
}
func (b *debuggableBuild) NewDebugger(cfg *debug.DebugConfig) *cobra.Command {
return buildCmd(b.dockerCli, b.rootOpts, cfg)
}
func buildCmd(dockerCli command.Cli, rootOpts *rootOptions, debugConfig *debug.DebugConfig) *cobra.Command {
cFlags := &commonFlags{}
var invokeFlag string
options := &buildOptions{}
cmd := &cobra.Command{
Use: "build [OPTIONS] PATH | URL | -",
@ -431,15 +431,15 @@ func buildCmd(dockerCli command.Cli, rootOpts *rootOptions) *cobra.Command {
options.progress = cFlags.progress
cmd.Flags().VisitAll(checkWarnedFlags)
if invokeFlag != "" {
invoke, err := parseInvokeConfig(invokeFlag)
if err != nil {
if debugConfig != nil && (debugConfig.InvokeFlag != "" || debugConfig.OnFlag != "") {
iConfig := new(invokeConfig)
if err := iConfig.parseInvokeConfig(debugConfig.InvokeFlag, debugConfig.OnFlag); err != nil {
return err
}
options.invoke = &invoke
options.noBuild = invokeFlag == "debug-shell"
options.invokeConfig = iConfig
}
return runBuild(dockerCli, options)
return runBuild(dockerCli, *options)
},
ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
return nil, cobra.ShellCompDirectiveFilterDirs
@ -515,8 +515,7 @@ func buildCmd(dockerCli command.Cli, rootOpts *rootOptions) *cobra.Command {
flags.StringVar(&options.provenance, "provenance", "", `Shorthand for "--attest=type=provenance"`)
if isExperimental() {
flags.StringVar(&invokeFlag, "invoke", "", "Invoke a command after the build")
flags.SetAnnotation("invoke", "experimentalCLI", nil)
// TODO: move this to debug command if needed
flags.StringVar(&options.Root, "root", "", "Specify root directory of server to connect")
flags.SetAnnotation("root", "experimentalCLI", nil)
flags.BoolVar(&options.Detach, "detach", false, "Detach buildx server (supported only on linux)")
@ -679,96 +678,6 @@ func updateLastActivity(dockerCli command.Cli, ng *store.NodeGroup) error {
return txn.UpdateLastActivity(ng)
}
type invokeConfig struct {
controllerapi.InvokeConfig
invokeFlag string
}
func (cfg *invokeConfig) needsMonitor(retErr error) bool {
switch cfg.invokeFlag {
case "debug-shell":
return true
case "on-error":
return retErr != nil
default:
return cfg.invokeFlag != ""
}
}
func parseInvokeConfig(invoke string) (cfg invokeConfig, err error) {
cfg.invokeFlag = invoke
cfg.Tty = true
cfg.NoCmd = true
switch invoke {
case "default", "debug-shell":
return cfg, nil
case "on-error":
// NOTE: we overwrite the command to run because the original one should fail on the failed step.
// TODO: make this configurable via flags or restorable from LLB.
// Discussion: https://github.com/docker/buildx/pull/1640#discussion_r1113295900
cfg.Cmd = []string{"/bin/sh"}
cfg.NoCmd = false
return cfg, nil
}
csvReader := csv.NewReader(strings.NewReader(invoke))
csvReader.LazyQuotes = true
fields, err := csvReader.Read()
if err != nil {
return cfg, err
}
if len(fields) == 1 && !strings.Contains(fields[0], "=") {
cfg.Cmd = []string{fields[0]}
cfg.NoCmd = false
return cfg, nil
}
cfg.NoUser = true
cfg.NoCwd = true
for _, field := range fields {
parts := strings.SplitN(field, "=", 2)
if len(parts) != 2 {
return cfg, errors.Errorf("invalid value %s", field)
}
key := strings.ToLower(parts[0])
value := parts[1]
switch key {
case "args":
cfg.Cmd = append(cfg.Cmd, maybeJSONArray(value)...)
cfg.NoCmd = false
case "entrypoint":
cfg.Entrypoint = append(cfg.Entrypoint, maybeJSONArray(value)...)
if cfg.Cmd == nil {
cfg.Cmd = []string{}
cfg.NoCmd = false
}
case "env":
cfg.Env = append(cfg.Env, maybeJSONArray(value)...)
case "user":
cfg.User = value
cfg.NoUser = false
case "cwd":
cfg.Cwd = value
cfg.NoCwd = false
case "tty":
cfg.Tty, err = strconv.ParseBool(value)
if err != nil {
return cfg, errors.Errorf("failed to parse tty: %v", err)
}
default:
return cfg, errors.Errorf("unknown key %q", key)
}
}
return cfg, nil
}
func maybeJSONArray(v string) []string {
var list []string
if err := json.Unmarshal([]byte(v), &list); err == nil {
return list
}
return []string{v}
}
func listToMap(values []string, defaultEnv bool) map[string]string {
result := make(map[string]string, len(values))
for _, value := range values {
@ -877,3 +786,108 @@ func printValue(printer printFunc, version string, format string, res map[string
}
return printer([]byte(res["result.json"]), os.Stdout)
}
type invokeConfig struct {
controllerapi.InvokeConfig
onFlag string
invokeFlag string
}
func (cfg *invokeConfig) needsDebug(retErr error) bool {
switch cfg.onFlag {
case "always":
return true
case "error":
return retErr != nil
default:
return cfg.invokeFlag != ""
}
}
func (cfg *invokeConfig) runDebug(ctx context.Context, ref string, options *controllerapi.BuildOptions, c control.BuildxController, stdin io.ReadCloser, stdout io.WriteCloser, stderr console.File, progress *progress.Printer) error {
con := console.Current()
if err := con.SetRaw(); err != nil {
// TODO: run disconnect in build command (on error case)
if err := c.Disconnect(ctx, ref); err != nil {
logrus.Warnf("disconnect error: %v", err)
}
return errors.Errorf("failed to configure terminal: %v", err)
}
defer con.Reset()
return monitor.RunMonitor(ctx, ref, options, cfg.InvokeConfig, c, stdin, stdout, stderr, progress)
}
func (cfg *invokeConfig) parseInvokeConfig(invoke, on string) error {
cfg.onFlag = on
cfg.invokeFlag = invoke
cfg.Tty = true
cfg.NoCmd = true
switch invoke {
case "default", "":
return nil
case "on-error":
// NOTE: we overwrite the command to run because the original one should fail on the failed step.
// TODO: make this configurable via flags or restorable from LLB.
// Discussion: https://github.com/docker/buildx/pull/1640#discussion_r1113295900
cfg.Cmd = []string{"/bin/sh"}
cfg.NoCmd = false
return nil
}
csvReader := csv.NewReader(strings.NewReader(invoke))
csvReader.LazyQuotes = true
fields, err := csvReader.Read()
if err != nil {
return err
}
if len(fields) == 1 && !strings.Contains(fields[0], "=") {
cfg.Cmd = []string{fields[0]}
cfg.NoCmd = false
return nil
}
cfg.NoUser = true
cfg.NoCwd = true
for _, field := range fields {
parts := strings.SplitN(field, "=", 2)
if len(parts) != 2 {
return errors.Errorf("invalid value %s", field)
}
key := strings.ToLower(parts[0])
value := parts[1]
switch key {
case "args":
cfg.Cmd = append(cfg.Cmd, maybeJSONArray(value)...)
cfg.NoCmd = false
case "entrypoint":
cfg.Entrypoint = append(cfg.Entrypoint, maybeJSONArray(value)...)
if cfg.Cmd == nil {
cfg.Cmd = []string{}
cfg.NoCmd = false
}
case "env":
cfg.Env = append(cfg.Env, maybeJSONArray(value)...)
case "user":
cfg.User = value
cfg.NoUser = false
case "cwd":
cfg.Cwd = value
cfg.NoCwd = false
case "tty":
cfg.Tty, err = strconv.ParseBool(value)
if err != nil {
return errors.Errorf("failed to parse tty: %v", err)
}
default:
return errors.Errorf("unknown key %q", key)
}
}
return nil
}
func maybeJSONArray(v string) []string {
var list []string
if err := json.Unmarshal([]byte(v), &list); err == nil {
return list
}
return []string{v}
}

79
commands/debug-shell.go
Unescape Escape View File

@ -1,79 +0,0 @@
package commands
import (
"context"
"os"
"runtime"
"github.com/containerd/console"
"github.com/docker/buildx/controller"
"github.com/docker/buildx/controller/control"
controllerapi "github.com/docker/buildx/controller/pb"
"github.com/docker/buildx/monitor"
"github.com/docker/buildx/util/progress"
"github.com/docker/cli/cli/command"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func debugShellCmd(dockerCli command.Cli) *cobra.Command {
var options control.ControlOptions
var progressMode string
cmd := &cobra.Command{
Use: "debug-shell",
Short: "Start a monitor",
Annotations: map[string]string{
"experimentalCLI": "",
},
RunE: func(cmd *cobra.Command, args []string) error {
printer, err := progress.NewPrinter(context.TODO(), os.Stderr, os.Stderr, progressMode)
if err != nil {
return err
}
ctx := context.TODO()
c, err := controller.NewController(ctx, options, dockerCli, printer)
if err != nil {
return err
}
defer func() {
if err := c.Close(); err != nil {
logrus.Warnf("failed to close server connection %v", err)
}
}()
con := console.Current()
if err := con.SetRaw(); err != nil {
return errors.Errorf("failed to configure terminal: %v", err)
}
err = monitor.RunMonitor(ctx, "", nil, controllerapi.InvokeConfig{
Tty: true,
}, c, dockerCli.In(), os.Stdout, os.Stderr, printer)
con.Reset()
return err
},
}
flags := cmd.Flags()
flags.StringVar(&options.Root, "root", "", "Specify root directory of server to connect")
flags.SetAnnotation("root", "experimentalCLI", nil)
flags.BoolVar(&options.Detach, "detach", runtime.GOOS == "linux", "Detach buildx server (supported only on linux)")
flags.SetAnnotation("detach", "experimentalCLI", nil)
flags.StringVar(&options.ServerConfig, "server-config", "", "Specify buildx server config file (used only when launching new server)")
flags.SetAnnotation("server-config", "experimentalCLI", nil)
flags.StringVar(&progressMode, "progress", "auto", `Set type of progress output ("auto", "plain", "tty"). Use plain to show container output`)
return cmd
}
func addDebugShellCommand(cmd *cobra.Command, dockerCli command.Cli) {
cmd.AddCommand(
debugShellCmd(dockerCli),
)
}

95
commands/debug/root.go
Unescape Escape View File

@ -0,0 +1,95 @@
package debug
import (
"context"
"os"
"runtime"
"github.com/containerd/console"
"github.com/docker/buildx/controller"
"github.com/docker/buildx/controller/control"
controllerapi "github.com/docker/buildx/controller/pb"
"github.com/docker/buildx/monitor"
"github.com/docker/buildx/util/progress"
"github.com/docker/cli/cli/command"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
// DebugConfig is a user-specified configuration for the debugger.
type DebugConfig struct {
// InvokeFlag is a flag to configure the launched debugger and the commaned executed on the debugger.
InvokeFlag string
// OnFlag is a flag to configure the timing of launching the debugger.
OnFlag string
}
// DebuggableCmd is a command that supports debugger with recognizing the user-specified DebugConfig.
type DebuggableCmd interface {
// NewDebugger returns the new *cobra.Command with support for the debugger with recognizing DebugConfig.
NewDebugger(*DebugConfig) *cobra.Command
}
func RootCmd(dockerCli command.Cli, children ...DebuggableCmd) *cobra.Command {
var controlOptions control.ControlOptions
var progressMode string
var options DebugConfig
cmd := &cobra.Command{
Use: "debug",
Short: "Start debugger",
Args: cobra.NoArgs,
Annotations: map[string]string{
"experimentalCLI": "",
},
RunE: func(cmd *cobra.Command, args []string) error {
printer, err := progress.NewPrinter(context.TODO(), os.Stderr, os.Stderr, progressMode)
if err != nil {
return err
}
ctx := context.TODO()
c, err := controller.NewController(ctx, controlOptions, dockerCli, printer)
if err != nil {
return err
}
defer func() {
if err := c.Close(); err != nil {
logrus.Warnf("failed to close server connection %v", err)
}
}()
con := console.Current()
if err := con.SetRaw(); err != nil {
return errors.Errorf("failed to configure terminal: %v", err)
}
err = monitor.RunMonitor(ctx, "", nil, controllerapi.InvokeConfig{
Tty: true,
}, c, dockerCli.In(), os.Stdout, os.Stderr, printer)
con.Reset()
return err
},
}
flags := cmd.Flags()
flags.StringVar(&options.InvokeFlag, "invoke", "", "Launch a monitor with executing specified command")
flags.SetAnnotation("invoke", "experimentalCLI", nil)
flags.StringVar(&options.OnFlag, "on", "", "When to launch the monitor ([always, error])")
flags.SetAnnotation("on", "experimentalCLI", nil)
flags.StringVar(&controlOptions.Root, "root", "", "Specify root directory of server to connect for the monitor")
flags.SetAnnotation("root", "experimentalCLI", nil)
flags.BoolVar(&controlOptions.Detach, "detach", runtime.GOOS == "linux", "Detach buildx server for the monitor (supported only on linux)")
flags.SetAnnotation("detach", "experimentalCLI", nil)
flags.StringVar(&controlOptions.ServerConfig, "server-config", "", "Specify buildx server config file for the monitor (used only when launching new server)")
flags.SetAnnotation("server-config", "experimentalCLI", nil)
flags.StringVar(&progressMode, "progress", "auto", `Set type of progress output ("auto", "plain", "tty") for the monitor. Use plain to show container output`)
for _, c := range children {
cmd.AddCommand(c.NewDebugger(&options))
}
return cmd
}

7
commands/root.go
Unescape Escape View File

@ -3,6 +3,7 @@ package commands
import (
"os"
debugcmd "github.com/docker/buildx/commands/debug"
imagetoolscmd "github.com/docker/buildx/commands/imagetools"
"github.com/docker/buildx/controller/remote"
"github.com/docker/buildx/util/cobrautil/completion"
@ -71,7 +72,7 @@ func addCommands(cmd *cobra.Command, dockerCli command.Cli) {
rootFlags(opts, cmd.PersistentFlags())
cmd.AddCommand(
buildCmd(dockerCli, opts),
buildCmd(dockerCli, opts, nil),
bakeCmd(dockerCli, opts),
createCmd(dockerCli),
rmCmd(dockerCli, opts),
@ -87,8 +88,10 @@ func addCommands(cmd *cobra.Command, dockerCli command.Cli) {
imagetoolscmd.RootCmd(dockerCli, imagetoolscmd.RootOptions{Builder: &opts.builder}),
)
if isExperimental() {
cmd.AddCommand(debugcmd.RootCmd(dockerCli,
newDebuggableBuild(dockerCli, opts),
))
remote.AddControllerCommands(cmd, dockerCli)
addDebugShellCommand(cmd, dockerCli)
}
cmd.RegisterFlagCompletionFunc( //nolint:errcheck

28
docs/guides/debugging.md
Unescape Escape View File

@ -19,11 +19,13 @@ your environment.
$ export BUILDX_EXPERIMENTAL=1
```
To start a debug session for a build, you can use the `--invoke` flag with the
build command to specify a command to launch in the resulting image.
To start a debug session for a build, you can use the `buildx debug` command with `--invoke` flag to specify a command to launch in the resulting image.
`buildx debug` command provides `buildx debug build` subcommand that provides the same features as the normal `buildx build` command but allows launching the debugger session after the build.
Arguments available after `buildx debug build` are the same as the normal `buildx build`.
```console
$ docker buildx build --invoke /bin/sh .
$ docker buildx debug --invoke /bin/sh build .
[+] Building 4.2s (19/19) FINISHED
=> [internal] connecting to local controller 0.0s
=> [internal] load build definition from Dockerfile 0.0s
@ -56,16 +58,16 @@ Supported keys are `args` (can be JSON array format), `entrypoint` (can be JSON
Example:
```
$ docker buildx build --invoke 'entrypoint=["sh"],"args=[""-c"", ""env | grep -e FOO -e AAA""]","env=[""FOO=bar"", ""AAA=bbb""]"' .
$ docker buildx debug --invoke 'entrypoint=["sh"],"args=[""-c"", ""env | grep -e FOO -e AAA""]","env=[""FOO=bar"", ""AAA=bbb""]"' build .
```
#### `on-error`
#### `on` flag
If you want to start a debug session when a build fails, you can use
`--invoke=on-error` to start a debug session when the build fails.
`--on=error` to start a debug session when the build fails.
```console
$ docker buildx build --invoke on-error .
$ docker buildx debug --on=error build .
[+] Building 4.2s (19/19) FINISHED
=> [internal] connecting to local controller 0.0s
=> [internal] load build definition from Dockerfile 0.0s
@ -85,13 +87,13 @@ Interactive container was restarted with process "edmzor60nrag7rh1mbi4o9lm8". Pr
This allows you to explore the state of the image when the build failed.
#### `debug-shell`
#### Launch the debug session directly with `buildx debug` subcommand
If you want to drop into a debug session without first starting the build, you
can use `--invoke=debug-shell` to start a debug session.
can use `buildx debug` command to start a debug session.
```
$ docker buildx build --invoke debug-shell .
$ docker buildx debug
[+] Building 4.2s (19/19) FINISHED
=> [internal] connecting to local controller 0.0s
(buildx)
@ -135,15 +137,15 @@ To detach the build process from the CLI, you can use the `--detach=true` flag w
the build command.
```console
$ docker buildx build --detach=true --invoke /bin/sh .
$ docker buildx debug --invoke /bin/sh build --detach=true .
```
If you start a debugging session using the `--invoke` flag with a detached
build, then you can attach to it using the `buildx debug-shell` subcommand to
build, then you can attach to it using the `buildx debug` command to
immediately enter the monitor mode.
```console
$ docker buildx debug-shell
$ docker buildx debug
[+] Building 0.0s (1/1) FINISHED
=> [internal] connecting to remote controller
(buildx) list

30
docs/reference/buildx.md
Unescape Escape View File

@ -9,21 +9,21 @@ Extended build capabilities with BuildKit
### Subcommands
| Name | Description |
|:---------------------------------------|:---------------------------------------|
| [`bake`](buildx_bake.md) | Build from a file |
| [`build`](buildx_build.md) | Start a build |
| [`create`](buildx_create.md) | Create a new builder instance |
| [`debug-shell`](buildx_debug-shell.md) | Start a monitor |
| [`du`](buildx_du.md) | Disk usage |
| [`imagetools`](buildx_imagetools.md) | Commands to work on images in registry |
| [`inspect`](buildx_inspect.md) | Inspect current builder instance |
| [`ls`](buildx_ls.md) | List builder instances |
| [`prune`](buildx_prune.md) | Remove build cache |
| [`rm`](buildx_rm.md) | Remove a builder instance |
| [`stop`](buildx_stop.md) | Stop builder instance |
| [`use`](buildx_use.md) | Set the current builder instance |
| [`version`](buildx_version.md) | Show buildx version information |
| Name | Description |
|:-------------------------------------|:---------------------------------------|
| [`bake`](buildx_bake.md) | Build from a file |
| [`build`](buildx_build.md) | Start a build |
| [`create`](buildx_create.md) | Create a new builder instance |
| [`debug`](buildx_debug.md) | Start debugger |
| [`du`](buildx_du.md) | Disk usage |
| [`imagetools`](buildx_imagetools.md) | Commands to work on images in registry |
| [`inspect`](buildx_inspect.md) | Inspect current builder instance |
| [`ls`](buildx_ls.md) | List builder instances |
| [`prune`](buildx_prune.md) | Remove build cache |
| [`rm`](buildx_rm.md) | Remove a builder instance |
| [`stop`](buildx_stop.md) | Stop builder instance |
| [`use`](buildx_use.md) | Set the current builder instance |
| [`version`](buildx_version.md) | Show buildx version information |
### Options

1
docs/reference/buildx_build.md
Unescape Escape View File

@ -27,7 +27,6 @@ Start a build
| `--detach` | | | Detach buildx server (supported only on linux) |
| [`-f`](https://docs.docker.com/engine/reference/commandline/build/#file), [`--file`](https://docs.docker.com/engine/reference/commandline/build/#file) | `string` | | Name of the Dockerfile (default: `PATH/Dockerfile`) |
| `--iidfile` | `string` | | Write the image ID to the file |
| `--invoke` | `string` | | Invoke a command after the build |
| `--label` | `stringArray` | | Set metadata for an image |
| [`--load`](#load) | | | Shorthand for `--output=type=docker` |
| [`--metadata-file`](#metadata-file) | `string` | | Write build result metadata to the file |

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# docker buildx debug-shell
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Start a monitor
### Options
| Name | Type | Default | Description |
|:------------------|:---------|:--------|:-----------------------------------------------------------------------------------------|
| `--builder` | `string` | | Override the configured builder instance |
| `--detach` | | | Detach buildx server (supported only on linux) |
| `--progress` | `string` | `auto` | Set type of progress output (`auto`, `plain`, `tty`). Use plain to show container output |
| `--root` | `string` | | Specify root directory of server to connect |
| `--server-config` | `string` | | Specify buildx server config file (used only when launching new server) |
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# docker buildx debug
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Start debugger
### Subcommands
| Name | Description |
|:---------------------------------|:--------------|
| [`build`](buildx_debug_build.md) | Start a build |
### Options
| Name | Type | Default | Description |
|:------------------|:---------|:--------|:---------------------------------------------------------------------------------------------------------|
| `--builder` | `string` | | Override the configured builder instance |
| `--detach` | | | Detach buildx server for the monitor (supported only on linux) |
| `--invoke` | `string` | | Launch a monitor with executing specified command |
| `--on` | `string` | | When to launch the monitor ([always, error]) |
| `--progress` | `string` | `auto` | Set type of progress output (`auto`, `plain`, `tty`) for the monitor. Use plain to show container output |
| `--root` | `string` | | Specify root directory of server to connect for the monitor |
| `--server-config` | `string` | | Specify buildx server config file for the monitor (used only when launching new server) |
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# docker buildx debug build
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Start a build
### Aliases
`docker buildx debug build`, `docker buildx debug b`
### Options
| Name | Type | Default | Description |
|:-------------------------------------------------------------------------------------------------------------------------------------------------------|:--------------|:----------|:----------------------------------------------------------------------------------------------------|
| [`--add-host`](https://docs.docker.com/engine/reference/commandline/build/#add-host) | `stringSlice` | | Add a custom host-to-IP mapping (format: `host:ip`) |
| `--allow` | `stringSlice` | | Allow extra privileged entitlement (e.g., `network.host`, `security.insecure`) |
| `--attest` | `stringArray` | | Attestation parameters (format: `type=sbom,generator=image`) |
| `--build-arg` | `stringArray` | | Set build-time variables |
| `--build-context` | `stringArray` | | Additional build contexts (e.g., name=path) |
| `--builder` | `string` | | Override the configured builder instance |
| `--cache-from` | `stringArray` | | External cache sources (e.g., `user/app:cache`, `type=local,src=path/to/dir`) |
| `--cache-to` | `stringArray` | | Cache export destinations (e.g., `user/app:cache`, `type=local,dest=path/to/dir`) |
| [`--cgroup-parent`](https://docs.docker.com/engine/reference/commandline/build/#cgroup-parent) | `string` | | Set the parent cgroup for the `RUN` instructions during build |
| `--detach` | | | Detach buildx server (supported only on linux) |
| [`-f`](https://docs.docker.com/engine/reference/commandline/build/#file), [`--file`](https://docs.docker.com/engine/reference/commandline/build/#file) | `string` | | Name of the Dockerfile (default: `PATH/Dockerfile`) |
| `--iidfile` | `string` | | Write the image ID to the file |
| `--label` | `stringArray` | | Set metadata for an image |
| `--load` | | | Shorthand for `--output=type=docker` |
| `--metadata-file` | `string` | | Write build result metadata to the file |
| `--network` | `string` | `default` | Set the networking mode for the `RUN` instructions during build |
| `--no-cache` | | | Do not use cache when building the image |
| `--no-cache-filter` | `stringArray` | | Do not cache specified stages |
| `-o`, `--output` | `stringArray` | | Output destination (format: `type=local,dest=path`) |
| `--platform` | `stringArray` | | Set target platform for build |
| `--print` | `string` | | Print result of information request (e.g., outline, targets) |
| `--progress` | `string` | `auto` | Set type of progress output (`auto`, `plain`, `tty`). Use plain to show container output |
| `--provenance` | `string` | | Shorthand for `--attest=type=provenance` |
| `--pull` | | | Always attempt to pull all referenced images |
| `--push` | | | Shorthand for `--output=type=registry` |
| `-q`, `--quiet` | | | Suppress the build output and print image ID on success |
| `--root` | `string` | | Specify root directory of server to connect |
| `--sbom` | `string` | | Shorthand for `--attest=type=sbom` |
| `--secret` | `stringArray` | | Secret to expose to the build (format: `id=mysecret[,src=/local/secret]`) |
| `--server-config` | `string` | | Specify buildx server config file (used only when launching new server) |
| `--shm-size` | `bytes` | `0` | Size of `/dev/shm` |
| `--ssh` | `stringArray` | | SSH agent socket or keys to expose to the build (format: `default\|<id>[=<socket>\|<key>[,<key>]]`) |
| [`-t`](https://docs.docker.com/engine/reference/commandline/build/#tag), [`--tag`](https://docs.docker.com/engine/reference/commandline/build/#tag) | `stringArray` | | Name and optionally a tag (format: `name:tag`) |
| [`--target`](https://docs.docker.com/engine/reference/commandline/build/#target) | `string` | | Set the target build stage to build |
| `--ulimit` | `ulimit` | | Ulimit options |
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