| package dockerfile2llb |
| |
| import ( |
| "bytes" |
| "context" |
| "encoding/json" |
| "fmt" |
| "net/url" |
| "path" |
| "path/filepath" |
| "sort" |
| "strconv" |
| "strings" |
| |
| "github.com/containerd/containerd/platforms" |
| "github.com/docker/distribution/reference" |
| "github.com/docker/docker/pkg/signal" |
| "github.com/docker/go-connections/nat" |
| "github.com/moby/buildkit/client/llb" |
| "github.com/moby/buildkit/client/llb/imagemetaresolver" |
| "github.com/moby/buildkit/frontend/dockerfile/instructions" |
| "github.com/moby/buildkit/frontend/dockerfile/parser" |
| "github.com/moby/buildkit/frontend/dockerfile/shell" |
| specs "github.com/opencontainers/image-spec/specs-go/v1" |
| "github.com/pkg/errors" |
| "golang.org/x/sync/errgroup" |
| ) |
| |
| const ( |
| emptyImageName = "scratch" |
| localNameContext = "context" |
| historyComment = "buildkit.dockerfile.v0" |
| |
| CopyImage = "tonistiigi/copy:v0.1.3@sha256:e57a3b4d6240f55bac26b655d2cfb751f8b9412d6f7bb1f787e946391fb4b21b" |
| ) |
| |
| type ConvertOpt struct { |
| Target string |
| MetaResolver llb.ImageMetaResolver |
| BuildArgs map[string]string |
| Labels map[string]string |
| SessionID string |
| BuildContext *llb.State |
| Excludes []string |
| // IgnoreCache contains names of the stages that should not use build cache. |
| // Empty slice means ignore cache for all stages. Nil doesn't disable cache. |
| IgnoreCache []string |
| // CacheIDNamespace scopes the IDs for different cache mounts |
| CacheIDNamespace string |
| TargetPlatform *specs.Platform |
| BuildPlatforms []specs.Platform |
| } |
| |
| func Dockerfile2LLB(ctx context.Context, dt []byte, opt ConvertOpt) (*llb.State, *Image, error) { |
| if len(dt) == 0 { |
| return nil, nil, errors.Errorf("the Dockerfile cannot be empty") |
| } |
| |
| if opt.TargetPlatform != nil && opt.BuildPlatforms == nil { |
| opt.BuildPlatforms = []specs.Platform{*opt.TargetPlatform} |
| } |
| if len(opt.BuildPlatforms) == 0 { |
| opt.BuildPlatforms = []specs.Platform{platforms.DefaultSpec()} |
| } |
| implicitTargetPlatform := false |
| if opt.TargetPlatform == nil { |
| implicitTargetPlatform = true |
| opt.TargetPlatform = &opt.BuildPlatforms[0] |
| } |
| |
| dockerfile, err := parser.Parse(bytes.NewReader(dt)) |
| if err != nil { |
| return nil, nil, err |
| } |
| |
| proxyEnv := proxyEnvFromBuildArgs(opt.BuildArgs) |
| |
| stages, metaArgs, err := instructions.Parse(dockerfile.AST) |
| if err != nil { |
| return nil, nil, err |
| } |
| |
| for i := range metaArgs { |
| metaArgs[i] = setBuildArgValue(metaArgs[i], opt.BuildArgs) |
| } |
| |
| shlex := shell.NewLex(dockerfile.EscapeToken) |
| |
| metaResolver := opt.MetaResolver |
| if metaResolver == nil { |
| metaResolver = imagemetaresolver.Default() |
| } |
| |
| var allDispatchStates []*dispatchState |
| dispatchStatesByName := map[string]*dispatchState{} |
| |
| // set base state for every image |
| for _, st := range stages { |
| name, err := shlex.ProcessWord(st.BaseName, toEnvList(metaArgs, nil)) |
| if err != nil { |
| return nil, nil, err |
| } |
| st.BaseName = name |
| |
| ds := &dispatchState{ |
| stage: st, |
| deps: make(map[*dispatchState]struct{}), |
| ctxPaths: make(map[string]struct{}), |
| } |
| |
| if v := st.Platform; v != "" { |
| v, err := shlex.ProcessWord(v, toEnvList(metaArgs, nil)) |
| if err != nil { |
| return nil, nil, errors.Wrapf(err, "failed to process arguments for platform %s", v) |
| } |
| |
| p, err := platforms.Parse(v) |
| if err != nil { |
| return nil, nil, errors.Wrapf(err, "failed to parse platform %s", v) |
| } |
| ds.platform = &p |
| } |
| |
| if d, ok := dispatchStatesByName[st.BaseName]; ok { |
| ds.base = d |
| } |
| allDispatchStates = append(allDispatchStates, ds) |
| if st.Name != "" { |
| dispatchStatesByName[strings.ToLower(st.Name)] = ds |
| } |
| if opt.IgnoreCache != nil { |
| if len(opt.IgnoreCache) == 0 { |
| ds.ignoreCache = true |
| } else if st.Name != "" { |
| for _, n := range opt.IgnoreCache { |
| if strings.EqualFold(n, st.Name) { |
| ds.ignoreCache = true |
| } |
| } |
| } |
| } |
| } |
| |
| var target *dispatchState |
| if opt.Target == "" { |
| target = allDispatchStates[len(allDispatchStates)-1] |
| } else { |
| var ok bool |
| target, ok = dispatchStatesByName[strings.ToLower(opt.Target)] |
| if !ok { |
| return nil, nil, errors.Errorf("target stage %s could not be found", opt.Target) |
| } |
| } |
| |
| // fill dependencies to stages so unreachable ones can avoid loading image configs |
| for _, d := range allDispatchStates { |
| d.commands = make([]command, len(d.stage.Commands)) |
| for i, cmd := range d.stage.Commands { |
| newCmd, err := toCommand(cmd, dispatchStatesByName, allDispatchStates) |
| if err != nil { |
| return nil, nil, err |
| } |
| d.commands[i] = newCmd |
| for _, src := range newCmd.sources { |
| if src != nil { |
| d.deps[src] = struct{}{} |
| if src.unregistered { |
| allDispatchStates = append(allDispatchStates, src) |
| } |
| } |
| } |
| } |
| } |
| |
| eg, ctx := errgroup.WithContext(ctx) |
| for i, d := range allDispatchStates { |
| reachable := isReachable(target, d) |
| // resolve image config for every stage |
| if d.base == nil { |
| if d.stage.BaseName == emptyImageName { |
| d.state = llb.Scratch() |
| d.image = emptyImage(*opt.TargetPlatform) |
| continue |
| } |
| func(i int, d *dispatchState) { |
| eg.Go(func() error { |
| ref, err := reference.ParseNormalizedNamed(d.stage.BaseName) |
| if err != nil { |
| return err |
| } |
| platform := d.platform |
| if platform == nil { |
| platform = opt.TargetPlatform |
| } |
| d.stage.BaseName = reference.TagNameOnly(ref).String() |
| var isScratch bool |
| if metaResolver != nil && reachable { |
| dgst, dt, err := metaResolver.ResolveImageConfig(ctx, d.stage.BaseName, platform) |
| if err == nil { // handle the error while builder is actually running |
| var img Image |
| if err := json.Unmarshal(dt, &img); err != nil { |
| return err |
| } |
| img.Created = nil |
| // if there is no explicit target platform, try to match based on image config |
| if d.platform == nil && implicitTargetPlatform { |
| p := autoDetectPlatform(img, *platform, opt.BuildPlatforms) |
| platform = &p |
| } |
| d.image = img |
| if dgst != "" { |
| ref, err = reference.WithDigest(ref, dgst) |
| if err != nil { |
| return err |
| } |
| } |
| d.stage.BaseName = ref.String() |
| _ = ref |
| if len(img.RootFS.DiffIDs) == 0 { |
| isScratch = true |
| } |
| } |
| } |
| if isScratch { |
| d.state = llb.Scratch() |
| } else { |
| d.state = llb.Image(d.stage.BaseName, dfCmd(d.stage.SourceCode), llb.Platform(*platform)) |
| } |
| return nil |
| }) |
| }(i, d) |
| } |
| } |
| |
| if err := eg.Wait(); err != nil { |
| return nil, nil, err |
| } |
| |
| buildContext := &mutableOutput{} |
| ctxPaths := map[string]struct{}{} |
| |
| for _, d := range allDispatchStates { |
| if !isReachable(target, d) { |
| continue |
| } |
| if d.base != nil { |
| d.state = d.base.state |
| d.image = clone(d.base.image) |
| } |
| |
| // initialize base metadata from image conf |
| for _, env := range d.image.Config.Env { |
| parts := strings.SplitN(env, "=", 2) |
| v := "" |
| if len(parts) > 1 { |
| v = parts[1] |
| } |
| if err := dispatchEnv(d, &instructions.EnvCommand{Env: []instructions.KeyValuePair{{Key: parts[0], Value: v}}}, false); err != nil { |
| return nil, nil, err |
| } |
| } |
| if d.image.Config.WorkingDir != "" { |
| if err = dispatchWorkdir(d, &instructions.WorkdirCommand{Path: d.image.Config.WorkingDir}, false); err != nil { |
| return nil, nil, err |
| } |
| } |
| if d.image.Config.User != "" { |
| if err = dispatchUser(d, &instructions.UserCommand{User: d.image.Config.User}, false); err != nil { |
| return nil, nil, err |
| } |
| } |
| |
| opt := dispatchOpt{ |
| allDispatchStates: allDispatchStates, |
| dispatchStatesByName: dispatchStatesByName, |
| metaArgs: metaArgs, |
| buildArgValues: opt.BuildArgs, |
| shlex: shlex, |
| sessionID: opt.SessionID, |
| buildContext: llb.NewState(buildContext), |
| proxyEnv: proxyEnv, |
| cacheIDNamespace: opt.CacheIDNamespace, |
| buildPlatforms: opt.BuildPlatforms, |
| targetPlatform: *opt.TargetPlatform, |
| } |
| |
| if err = dispatchOnBuild(d, d.image.Config.OnBuild, opt); err != nil { |
| return nil, nil, err |
| } |
| |
| for _, cmd := range d.commands { |
| if err := dispatch(d, cmd, opt); err != nil { |
| return nil, nil, err |
| } |
| } |
| |
| for p := range d.ctxPaths { |
| ctxPaths[p] = struct{}{} |
| } |
| } |
| |
| if len(opt.Labels) != 0 && target.image.Config.Labels == nil { |
| target.image.Config.Labels = make(map[string]string, len(opt.Labels)) |
| } |
| for k, v := range opt.Labels { |
| target.image.Config.Labels[k] = v |
| } |
| |
| opts := []llb.LocalOption{ |
| llb.SessionID(opt.SessionID), |
| llb.ExcludePatterns(opt.Excludes), |
| llb.SharedKeyHint(localNameContext), |
| } |
| if includePatterns := normalizeContextPaths(ctxPaths); includePatterns != nil { |
| opts = append(opts, llb.FollowPaths(includePatterns)) |
| } |
| bc := llb.Local(localNameContext, opts...) |
| if opt.BuildContext != nil { |
| bc = *opt.BuildContext |
| } |
| buildContext.Output = bc.Output() |
| |
| st := target.state.SetMarhalDefaults(llb.Platform(*opt.TargetPlatform)) |
| |
| if !implicitTargetPlatform { |
| target.image.OS = opt.TargetPlatform.OS |
| target.image.Architecture = opt.TargetPlatform.Architecture |
| } |
| |
| return &st, &target.image, nil |
| } |
| |
| func toCommand(ic instructions.Command, dispatchStatesByName map[string]*dispatchState, allDispatchStates []*dispatchState) (command, error) { |
| cmd := command{Command: ic} |
| if c, ok := ic.(*instructions.CopyCommand); ok { |
| if c.From != "" { |
| var stn *dispatchState |
| index, err := strconv.Atoi(c.From) |
| if err != nil { |
| stn, ok = dispatchStatesByName[strings.ToLower(c.From)] |
| if !ok { |
| stn = &dispatchState{ |
| stage: instructions.Stage{BaseName: c.From}, |
| deps: make(map[*dispatchState]struct{}), |
| unregistered: true, |
| } |
| } |
| } else { |
| if index < 0 || index >= len(allDispatchStates) { |
| return command{}, errors.Errorf("invalid stage index %d", index) |
| } |
| stn = allDispatchStates[index] |
| } |
| cmd.sources = []*dispatchState{stn} |
| } |
| } |
| |
| if ok := detectRunMount(&cmd, dispatchStatesByName, allDispatchStates); ok { |
| return cmd, nil |
| } |
| |
| return cmd, nil |
| } |
| |
| type dispatchOpt struct { |
| allDispatchStates []*dispatchState |
| dispatchStatesByName map[string]*dispatchState |
| metaArgs []instructions.ArgCommand |
| buildArgValues map[string]string |
| shlex *shell.Lex |
| sessionID string |
| buildContext llb.State |
| proxyEnv *llb.ProxyEnv |
| cacheIDNamespace string |
| targetPlatform specs.Platform |
| buildPlatforms []specs.Platform |
| } |
| |
| func dispatch(d *dispatchState, cmd command, opt dispatchOpt) error { |
| if ex, ok := cmd.Command.(instructions.SupportsSingleWordExpansion); ok { |
| err := ex.Expand(func(word string) (string, error) { |
| return opt.shlex.ProcessWord(word, toEnvList(d.buildArgs, d.image.Config.Env)) |
| }) |
| if err != nil { |
| return err |
| } |
| } |
| |
| var err error |
| switch c := cmd.Command.(type) { |
| case *instructions.MaintainerCommand: |
| err = dispatchMaintainer(d, c) |
| case *instructions.EnvCommand: |
| err = dispatchEnv(d, c, true) |
| case *instructions.RunCommand: |
| err = dispatchRun(d, c, opt.proxyEnv, cmd.sources, opt) |
| case *instructions.WorkdirCommand: |
| err = dispatchWorkdir(d, c, true) |
| case *instructions.AddCommand: |
| err = dispatchCopy(d, c.SourcesAndDest, opt.buildContext, true, c, "", opt) |
| if err == nil { |
| for _, src := range c.Sources() { |
| d.ctxPaths[path.Join("/", filepath.ToSlash(src))] = struct{}{} |
| } |
| } |
| case *instructions.LabelCommand: |
| err = dispatchLabel(d, c) |
| case *instructions.OnbuildCommand: |
| err = dispatchOnbuild(d, c) |
| case *instructions.CmdCommand: |
| err = dispatchCmd(d, c) |
| case *instructions.EntrypointCommand: |
| err = dispatchEntrypoint(d, c) |
| case *instructions.HealthCheckCommand: |
| err = dispatchHealthcheck(d, c) |
| case *instructions.ExposeCommand: |
| err = dispatchExpose(d, c, opt.shlex) |
| case *instructions.UserCommand: |
| err = dispatchUser(d, c, true) |
| case *instructions.VolumeCommand: |
| err = dispatchVolume(d, c) |
| case *instructions.StopSignalCommand: |
| err = dispatchStopSignal(d, c) |
| case *instructions.ShellCommand: |
| err = dispatchShell(d, c) |
| case *instructions.ArgCommand: |
| err = dispatchArg(d, c, opt.metaArgs, opt.buildArgValues) |
| case *instructions.CopyCommand: |
| l := opt.buildContext |
| if len(cmd.sources) != 0 { |
| l = cmd.sources[0].state |
| } |
| err = dispatchCopy(d, c.SourcesAndDest, l, false, c, c.Chown, opt) |
| if err == nil && len(cmd.sources) == 0 { |
| for _, src := range c.Sources() { |
| d.ctxPaths[path.Join("/", filepath.ToSlash(src))] = struct{}{} |
| } |
| } |
| default: |
| } |
| return err |
| } |
| |
| type dispatchState struct { |
| state llb.State |
| image Image |
| platform *specs.Platform |
| stage instructions.Stage |
| base *dispatchState |
| deps map[*dispatchState]struct{} |
| buildArgs []instructions.ArgCommand |
| commands []command |
| ctxPaths map[string]struct{} |
| ignoreCache bool |
| cmdSet bool |
| unregistered bool |
| } |
| |
| type command struct { |
| instructions.Command |
| sources []*dispatchState |
| } |
| |
| func dispatchOnBuild(d *dispatchState, triggers []string, opt dispatchOpt) error { |
| for _, trigger := range triggers { |
| ast, err := parser.Parse(strings.NewReader(trigger)) |
| if err != nil { |
| return err |
| } |
| if len(ast.AST.Children) != 1 { |
| return errors.New("onbuild trigger should be a single expression") |
| } |
| ic, err := instructions.ParseCommand(ast.AST.Children[0]) |
| if err != nil { |
| return err |
| } |
| cmd, err := toCommand(ic, opt.dispatchStatesByName, opt.allDispatchStates) |
| if err != nil { |
| return err |
| } |
| if err := dispatch(d, cmd, opt); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| func dispatchEnv(d *dispatchState, c *instructions.EnvCommand, commit bool) error { |
| commitMessage := bytes.NewBufferString("ENV") |
| for _, e := range c.Env { |
| commitMessage.WriteString(" " + e.String()) |
| d.state = d.state.AddEnv(e.Key, e.Value) |
| d.image.Config.Env = addEnv(d.image.Config.Env, e.Key, e.Value, true) |
| } |
| if commit { |
| return commitToHistory(&d.image, commitMessage.String(), false, nil) |
| } |
| return nil |
| } |
| |
| func dispatchRun(d *dispatchState, c *instructions.RunCommand, proxy *llb.ProxyEnv, sources []*dispatchState, dopt dispatchOpt) error { |
| var args []string = c.CmdLine |
| if c.PrependShell { |
| args = withShell(d.image, args) |
| } else if d.image.Config.Entrypoint != nil { |
| args = append(d.image.Config.Entrypoint, args...) |
| } |
| opt := []llb.RunOption{llb.Args(args)} |
| for _, arg := range d.buildArgs { |
| opt = append(opt, llb.AddEnv(arg.Key, getArgValue(arg))) |
| } |
| opt = append(opt, dfCmd(c)) |
| if d.ignoreCache { |
| opt = append(opt, llb.IgnoreCache) |
| } |
| if proxy != nil { |
| opt = append(opt, llb.WithProxy(*proxy)) |
| } |
| |
| runMounts, err := dispatchRunMounts(d, c, sources, dopt) |
| if err != nil { |
| return err |
| } |
| opt = append(opt, runMounts...) |
| |
| d.state = d.state.Run(opt...).Root() |
| return commitToHistory(&d.image, "RUN "+runCommandString(args, d.buildArgs), true, &d.state) |
| } |
| |
| func dispatchWorkdir(d *dispatchState, c *instructions.WorkdirCommand, commit bool) error { |
| d.state = d.state.Dir(c.Path) |
| wd := c.Path |
| if !path.IsAbs(c.Path) { |
| wd = path.Join("/", d.image.Config.WorkingDir, wd) |
| } |
| d.image.Config.WorkingDir = wd |
| if commit { |
| return commitToHistory(&d.image, "WORKDIR "+wd, false, nil) |
| } |
| return nil |
| } |
| |
| func dispatchCopy(d *dispatchState, c instructions.SourcesAndDest, sourceState llb.State, isAddCommand bool, cmdToPrint interface{}, chown string, opt dispatchOpt) error { |
| // TODO: this should use CopyOp instead. Current implementation is inefficient |
| img := llb.Image(CopyImage, llb.Platform(opt.buildPlatforms[0])) |
| |
| dest := path.Join(".", pathRelativeToWorkingDir(d.state, c.Dest())) |
| if c.Dest() == "." || c.Dest()[len(c.Dest())-1] == filepath.Separator { |
| dest += string(filepath.Separator) |
| } |
| args := []string{"copy"} |
| unpack := isAddCommand |
| |
| mounts := make([]llb.RunOption, 0, len(c.Sources())) |
| if chown != "" { |
| args = append(args, fmt.Sprintf("--chown=%s", chown)) |
| _, _, err := parseUser(chown) |
| if err != nil { |
| mounts = append(mounts, llb.AddMount("/etc/passwd", d.state, llb.SourcePath("/etc/passwd"), llb.Readonly)) |
| mounts = append(mounts, llb.AddMount("/etc/group", d.state, llb.SourcePath("/etc/group"), llb.Readonly)) |
| } |
| } |
| |
| commitMessage := bytes.NewBufferString("") |
| if isAddCommand { |
| commitMessage.WriteString("ADD") |
| } else { |
| commitMessage.WriteString("COPY") |
| } |
| |
| for i, src := range c.Sources() { |
| commitMessage.WriteString(" " + src) |
| if isAddCommand && (strings.HasPrefix(src, "http://") || strings.HasPrefix(src, "https://")) { |
| // Resources from remote URLs are not decompressed. |
| // https://docs.docker.com/engine/reference/builder/#add |
| // |
| // Note: mixing up remote archives and local archives in a single ADD instruction |
| // would result in undefined behavior: https://github.com/moby/buildkit/pull/387#discussion_r189494717 |
| unpack = false |
| u, err := url.Parse(src) |
| f := "__unnamed__" |
| if err == nil { |
| if base := path.Base(u.Path); base != "." && base != "/" { |
| f = base |
| } |
| } |
| target := path.Join(fmt.Sprintf("/src-%d", i), f) |
| args = append(args, target) |
| mounts = append(mounts, llb.AddMount(path.Dir(target), llb.HTTP(src, llb.Filename(f), dfCmd(c)), llb.Readonly)) |
| } else { |
| d, f := splitWildcards(src) |
| targetCmd := fmt.Sprintf("/src-%d", i) |
| targetMount := targetCmd |
| if f == "" { |
| f = path.Base(src) |
| targetMount = path.Join(targetMount, f) |
| } |
| targetCmd = path.Join(targetCmd, f) |
| args = append(args, targetCmd) |
| mounts = append(mounts, llb.AddMount(targetMount, sourceState, llb.SourcePath(d), llb.Readonly)) |
| } |
| } |
| |
| commitMessage.WriteString(" " + c.Dest()) |
| |
| args = append(args, dest) |
| if unpack { |
| args = append(args[:1], append([]string{"--unpack"}, args[1:]...)...) |
| } |
| |
| runOpt := []llb.RunOption{llb.Args(args), llb.Dir("/dest"), llb.ReadonlyRootFS(), dfCmd(cmdToPrint)} |
| if d.ignoreCache { |
| runOpt = append(runOpt, llb.IgnoreCache) |
| } |
| run := img.Run(append(runOpt, mounts...)...) |
| d.state = run.AddMount("/dest", d.state).Platform(opt.targetPlatform) |
| |
| return commitToHistory(&d.image, commitMessage.String(), true, &d.state) |
| } |
| |
| func dispatchMaintainer(d *dispatchState, c *instructions.MaintainerCommand) error { |
| d.image.Author = c.Maintainer |
| return commitToHistory(&d.image, fmt.Sprintf("MAINTAINER %v", c.Maintainer), false, nil) |
| } |
| |
| func dispatchLabel(d *dispatchState, c *instructions.LabelCommand) error { |
| commitMessage := bytes.NewBufferString("LABEL") |
| if d.image.Config.Labels == nil { |
| d.image.Config.Labels = make(map[string]string, len(c.Labels)) |
| } |
| for _, v := range c.Labels { |
| d.image.Config.Labels[v.Key] = v.Value |
| commitMessage.WriteString(" " + v.String()) |
| } |
| return commitToHistory(&d.image, commitMessage.String(), false, nil) |
| } |
| |
| func dispatchOnbuild(d *dispatchState, c *instructions.OnbuildCommand) error { |
| d.image.Config.OnBuild = append(d.image.Config.OnBuild, c.Expression) |
| return nil |
| } |
| |
| func dispatchCmd(d *dispatchState, c *instructions.CmdCommand) error { |
| var args []string = c.CmdLine |
| if c.PrependShell { |
| args = withShell(d.image, args) |
| } |
| d.image.Config.Cmd = args |
| d.image.Config.ArgsEscaped = true |
| d.cmdSet = true |
| return commitToHistory(&d.image, fmt.Sprintf("CMD %q", args), false, nil) |
| } |
| |
| func dispatchEntrypoint(d *dispatchState, c *instructions.EntrypointCommand) error { |
| var args []string = c.CmdLine |
| if c.PrependShell { |
| args = withShell(d.image, args) |
| } |
| d.image.Config.Entrypoint = args |
| if !d.cmdSet { |
| d.image.Config.Cmd = nil |
| } |
| return commitToHistory(&d.image, fmt.Sprintf("ENTRYPOINT %q", args), false, nil) |
| } |
| |
| func dispatchHealthcheck(d *dispatchState, c *instructions.HealthCheckCommand) error { |
| d.image.Config.Healthcheck = &HealthConfig{ |
| Test: c.Health.Test, |
| Interval: c.Health.Interval, |
| Timeout: c.Health.Timeout, |
| StartPeriod: c.Health.StartPeriod, |
| Retries: c.Health.Retries, |
| } |
| return commitToHistory(&d.image, fmt.Sprintf("HEALTHCHECK %q", d.image.Config.Healthcheck), false, nil) |
| } |
| |
| func dispatchExpose(d *dispatchState, c *instructions.ExposeCommand, shlex *shell.Lex) error { |
| ports := []string{} |
| for _, p := range c.Ports { |
| ps, err := shlex.ProcessWords(p, toEnvList(d.buildArgs, d.image.Config.Env)) |
| if err != nil { |
| return err |
| } |
| ports = append(ports, ps...) |
| } |
| c.Ports = ports |
| |
| ps, _, err := nat.ParsePortSpecs(c.Ports) |
| if err != nil { |
| return err |
| } |
| |
| if d.image.Config.ExposedPorts == nil { |
| d.image.Config.ExposedPorts = make(map[string]struct{}) |
| } |
| for p := range ps { |
| d.image.Config.ExposedPorts[string(p)] = struct{}{} |
| } |
| |
| return commitToHistory(&d.image, fmt.Sprintf("EXPOSE %v", ps), false, nil) |
| } |
| |
| func dispatchUser(d *dispatchState, c *instructions.UserCommand, commit bool) error { |
| d.state = d.state.User(c.User) |
| d.image.Config.User = c.User |
| if commit { |
| return commitToHistory(&d.image, fmt.Sprintf("USER %v", c.User), false, nil) |
| } |
| return nil |
| } |
| |
| func dispatchVolume(d *dispatchState, c *instructions.VolumeCommand) error { |
| if d.image.Config.Volumes == nil { |
| d.image.Config.Volumes = map[string]struct{}{} |
| } |
| for _, v := range c.Volumes { |
| if v == "" { |
| return errors.New("VOLUME specified can not be an empty string") |
| } |
| d.image.Config.Volumes[v] = struct{}{} |
| } |
| return commitToHistory(&d.image, fmt.Sprintf("VOLUME %v", c.Volumes), false, nil) |
| } |
| |
| func dispatchStopSignal(d *dispatchState, c *instructions.StopSignalCommand) error { |
| if _, err := signal.ParseSignal(c.Signal); err != nil { |
| return err |
| } |
| d.image.Config.StopSignal = c.Signal |
| return commitToHistory(&d.image, fmt.Sprintf("STOPSIGNAL %v", c.Signal), false, nil) |
| } |
| |
| func dispatchShell(d *dispatchState, c *instructions.ShellCommand) error { |
| d.image.Config.Shell = c.Shell |
| return commitToHistory(&d.image, fmt.Sprintf("SHELL %v", c.Shell), false, nil) |
| } |
| |
| func dispatchArg(d *dispatchState, c *instructions.ArgCommand, metaArgs []instructions.ArgCommand, buildArgValues map[string]string) error { |
| commitStr := "ARG " + c.Key |
| if c.Value != nil { |
| commitStr += "=" + *c.Value |
| } |
| if c.Value == nil { |
| for _, ma := range metaArgs { |
| if ma.Key == c.Key { |
| c.Value = ma.Value |
| } |
| } |
| } |
| |
| d.buildArgs = append(d.buildArgs, setBuildArgValue(*c, buildArgValues)) |
| return commitToHistory(&d.image, commitStr, false, nil) |
| } |
| |
| func pathRelativeToWorkingDir(s llb.State, p string) string { |
| if path.IsAbs(p) { |
| return p |
| } |
| return path.Join(s.GetDir(), p) |
| } |
| |
| func splitWildcards(name string) (string, string) { |
| i := 0 |
| for ; i < len(name); i++ { |
| ch := name[i] |
| if ch == '\\' { |
| i++ |
| } else if ch == '*' || ch == '?' || ch == '[' { |
| break |
| } |
| } |
| if i == len(name) { |
| return name, "" |
| } |
| |
| base := path.Base(name[:i]) |
| if name[:i] == "" || strings.HasSuffix(name[:i], string(filepath.Separator)) { |
| base = "" |
| } |
| return path.Dir(name[:i]), base + name[i:] |
| } |
| |
| func addEnv(env []string, k, v string, override bool) []string { |
| gotOne := false |
| for i, envVar := range env { |
| envParts := strings.SplitN(envVar, "=", 2) |
| compareFrom := envParts[0] |
| if shell.EqualEnvKeys(compareFrom, k) { |
| if override { |
| env[i] = k + "=" + v |
| } |
| gotOne = true |
| break |
| } |
| } |
| if !gotOne { |
| env = append(env, k+"="+v) |
| } |
| return env |
| } |
| |
| func setBuildArgValue(c instructions.ArgCommand, values map[string]string) instructions.ArgCommand { |
| if v, ok := values[c.Key]; ok { |
| c.Value = &v |
| } |
| return c |
| } |
| |
| func toEnvList(args []instructions.ArgCommand, env []string) []string { |
| for _, arg := range args { |
| env = addEnv(env, arg.Key, getArgValue(arg), false) |
| } |
| return env |
| } |
| |
| func getArgValue(arg instructions.ArgCommand) string { |
| v := "" |
| if arg.Value != nil { |
| v = *arg.Value |
| } |
| return v |
| } |
| |
| func dfCmd(cmd interface{}) llb.ConstraintsOpt { |
| // TODO: add fmt.Stringer to instructions.Command to remove interface{} |
| var cmdStr string |
| if cmd, ok := cmd.(fmt.Stringer); ok { |
| cmdStr = cmd.String() |
| } |
| if cmd, ok := cmd.(string); ok { |
| cmdStr = cmd |
| } |
| return llb.WithDescription(map[string]string{ |
| "com.docker.dockerfile.v1.command": cmdStr, |
| }) |
| } |
| |
| func runCommandString(args []string, buildArgs []instructions.ArgCommand) string { |
| var tmpBuildEnv []string |
| for _, arg := range buildArgs { |
| tmpBuildEnv = append(tmpBuildEnv, arg.Key+"="+getArgValue(arg)) |
| } |
| if len(tmpBuildEnv) > 0 { |
| tmpBuildEnv = append([]string{fmt.Sprintf("|%d", len(tmpBuildEnv))}, tmpBuildEnv...) |
| } |
| |
| return strings.Join(append(tmpBuildEnv, args...), " ") |
| } |
| |
| func commitToHistory(img *Image, msg string, withLayer bool, st *llb.State) error { |
| if st != nil { |
| msg += " # buildkit" |
| } |
| |
| img.History = append(img.History, specs.History{ |
| CreatedBy: msg, |
| Comment: historyComment, |
| EmptyLayer: !withLayer, |
| }) |
| return nil |
| } |
| |
| func isReachable(from, to *dispatchState) (ret bool) { |
| if from == nil { |
| return false |
| } |
| if from == to || isReachable(from.base, to) { |
| return true |
| } |
| for d := range from.deps { |
| if isReachable(d, to) { |
| return true |
| } |
| } |
| return false |
| } |
| |
| func parseUser(str string) (uid uint32, gid uint32, err error) { |
| if str == "" { |
| return 0, 0, nil |
| } |
| parts := strings.SplitN(str, ":", 2) |
| for i, v := range parts { |
| switch i { |
| case 0: |
| uid, err = parseUID(v) |
| if err != nil { |
| return 0, 0, err |
| } |
| if len(parts) == 1 { |
| gid = uid |
| } |
| case 1: |
| gid, err = parseUID(v) |
| if err != nil { |
| return 0, 0, err |
| } |
| } |
| } |
| return |
| } |
| |
| func parseUID(str string) (uint32, error) { |
| if str == "root" { |
| return 0, nil |
| } |
| uid, err := strconv.ParseUint(str, 10, 32) |
| if err != nil { |
| return 0, err |
| } |
| return uint32(uid), nil |
| } |
| |
| func normalizeContextPaths(paths map[string]struct{}) []string { |
| pathSlice := make([]string, 0, len(paths)) |
| for p := range paths { |
| if p == "/" { |
| return nil |
| } |
| pathSlice = append(pathSlice, p) |
| } |
| |
| toDelete := map[string]struct{}{} |
| for i := range pathSlice { |
| for j := range pathSlice { |
| if i == j { |
| continue |
| } |
| if strings.HasPrefix(pathSlice[j], pathSlice[i]+"/") { |
| delete(paths, pathSlice[j]) |
| } |
| } |
| } |
| |
| toSort := make([]string, 0, len(paths)) |
| for p := range paths { |
| if _, ok := toDelete[p]; !ok { |
| toSort = append(toSort, path.Join(".", p)) |
| } |
| } |
| sort.Slice(toSort, func(i, j int) bool { |
| return toSort[i] < toSort[j] |
| }) |
| return toSort |
| } |
| |
| func proxyEnvFromBuildArgs(args map[string]string) *llb.ProxyEnv { |
| pe := &llb.ProxyEnv{} |
| isNil := true |
| for k, v := range args { |
| if strings.EqualFold(k, "http_proxy") { |
| pe.HttpProxy = v |
| isNil = false |
| } |
| if strings.EqualFold(k, "https_proxy") { |
| pe.HttpsProxy = v |
| isNil = false |
| } |
| if strings.EqualFold(k, "ftp_proxy") { |
| pe.FtpProxy = v |
| isNil = false |
| } |
| if strings.EqualFold(k, "no_proxy") { |
| pe.NoProxy = v |
| isNil = false |
| } |
| } |
| if isNil { |
| return nil |
| } |
| return pe |
| } |
| |
| type mutableOutput struct { |
| llb.Output |
| } |
| |
| func withShell(img Image, args []string) []string { |
| var shell []string |
| if len(img.Config.Shell) > 0 { |
| shell = append([]string{}, img.Config.Shell...) |
| } else { |
| shell = defaultShell() |
| } |
| return append(shell, strings.Join(args, " ")) |
| } |
| |
| func autoDetectPlatform(img Image, target specs.Platform, supported []specs.Platform) specs.Platform { |
| os := img.OS |
| arch := img.Architecture |
| if target.OS == os && target.Architecture == arch { |
| return target |
| } |
| for _, p := range supported { |
| if p.OS == os && p.Architecture == arch { |
| return p |
| } |
| } |
| return target |
| } |