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convert.go
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convert.go
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package dockerfile2llb
import (
"bytes"
"context"
"encoding/json"
"fmt"
"math"
"net/url"
"os"
"path"
"path/filepath"
"sort"
"strconv"
"strings"
"github.com/containerd/containerd/platforms"
"github.com/docker/distribution/reference"
"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"
"github.com/moby/buildkit/identity"
"github.com/moby/buildkit/solver/pb"
"github.com/moby/buildkit/util/apicaps"
binfotypes "github.com/moby/buildkit/util/buildinfo/types"
"github.com/moby/buildkit/util/gitutil"
"github.com/moby/buildkit/util/suggest"
"github.com/moby/buildkit/util/system"
"github.com/moby/sys/signal"
ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
"golang.org/x/sync/errgroup"
)
const (
emptyImageName = "scratch"
defaultContextLocalName = "context"
historyComment = "buildkit.dockerfile.v0"
)
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
ImageResolveMode llb.ResolveMode
TargetPlatform *ocispecs.Platform
BuildPlatforms []ocispecs.Platform
PrefixPlatform bool
ExtraHosts []llb.HostIP
ShmSize int64
Ulimit []pb.Ulimit
CgroupParent string
ForceNetMode pb.NetMode
LLBCaps *apicaps.CapSet
ContextLocalName string
SourceMap *llb.SourceMap
Hostname string
Warn func(short, url string, detail [][]byte, location *parser.Range)
ContextByName func(context.Context, string) (*llb.State, *Image, *binfotypes.BuildInfo, error)
}
func Dockerfile2LLB(ctx context.Context, dt []byte, opt ConvertOpt) (*llb.State, *Image, *binfotypes.BuildInfo, error) {
buildInfo := &binfotypes.BuildInfo{}
contextByName := opt.ContextByName
opt.ContextByName = func(ctx context.Context, name string) (*llb.State, *Image, *binfotypes.BuildInfo, error) {
if !strings.EqualFold(name, "scratch") && !strings.EqualFold(name, "context") {
if contextByName != nil {
st, img, bi, err := contextByName(ctx, name)
if err != nil {
return nil, nil, nil, err
}
if bi != nil && bi.Deps != nil {
for k := range bi.Deps {
if buildInfo.Deps == nil {
buildInfo.Deps = make(map[string]binfotypes.BuildInfo)
}
buildInfo.Deps[k] = bi.Deps[k]
}
}
return st, img, bi, nil
}
}
return nil, nil, nil, nil
}
if len(dt) == 0 {
return nil, nil, nil, errors.Errorf("the Dockerfile cannot be empty")
}
if opt.ContextLocalName == "" {
opt.ContextLocalName = defaultContextLocalName
}
platformOpt := buildPlatformOpt(&opt)
optMetaArgs := getPlatformArgs(platformOpt)
for i, arg := range optMetaArgs {
optMetaArgs[i] = setKVValue(arg, opt.BuildArgs)
}
dockerfile, err := parser.Parse(bytes.NewReader(dt))
if err != nil {
return nil, nil, nil, err
}
for _, w := range dockerfile.Warnings {
opt.Warn(w.Short, w.URL, w.Detail, w.Location)
}
proxyEnv := proxyEnvFromBuildArgs(opt.BuildArgs)
stages, metaArgs, err := instructions.Parse(dockerfile.AST)
if err != nil {
return nil, nil, nil, err
}
shlex := shell.NewLex(dockerfile.EscapeToken)
for _, cmd := range metaArgs {
for _, metaArg := range cmd.Args {
if metaArg.Value != nil {
*metaArg.Value, _ = shlex.ProcessWordWithMap(*metaArg.Value, metaArgsToMap(optMetaArgs))
}
optMetaArgs = append(optMetaArgs, setKVValue(metaArg, opt.BuildArgs))
}
}
metaResolver := opt.MetaResolver
if metaResolver == nil {
metaResolver = imagemetaresolver.Default()
}
allDispatchStates := newDispatchStates()
// set base state for every image
for i, st := range stages {
name, err := shlex.ProcessWordWithMap(st.BaseName, metaArgsToMap(optMetaArgs))
if err != nil {
return nil, nil, nil, parser.WithLocation(err, st.Location)
}
if name == "" {
return nil, nil, nil, parser.WithLocation(errors.Errorf("base name (%s) should not be blank", st.BaseName), st.Location)
}
st.BaseName = name
ds := &dispatchState{
stage: st,
deps: make(map[*dispatchState]struct{}),
ctxPaths: make(map[string]struct{}),
stageName: st.Name,
prefixPlatform: opt.PrefixPlatform,
}
if st.Name != "" {
s, img, bi, err := opt.ContextByName(ctx, st.Name)
if err != nil {
return nil, nil, nil, err
}
if s != nil {
ds.noinit = true
ds.state = *s
if img != nil {
ds.image = *img
if img.Architecture != "" && img.OS != "" {
ds.platform = &ocispecs.Platform{
OS: img.OS,
Architecture: img.Architecture,
Variant: img.Variant,
}
}
}
if bi != nil {
ds.buildInfo = *bi
}
allDispatchStates.addState(ds)
continue
}
}
if st.Name == "" {
ds.stageName = fmt.Sprintf("stage-%d", i)
}
if v := st.Platform; v != "" {
v, err := shlex.ProcessWordWithMap(v, metaArgsToMap(optMetaArgs))
if err != nil {
return nil, nil, nil, parser.WithLocation(errors.Wrapf(err, "failed to process arguments for platform %s", v), st.Location)
}
p, err := platforms.Parse(v)
if err != nil {
return nil, nil, nil, parser.WithLocation(errors.Wrapf(err, "failed to parse platform %s", v), st.Location)
}
ds.platform = &p
}
allDispatchStates.addState(ds)
total := 0
if ds.stage.BaseName != emptyImageName && ds.base == nil {
total = 1
}
for _, cmd := range ds.stage.Commands {
switch cmd.(type) {
case *instructions.AddCommand, *instructions.CopyCommand, *instructions.RunCommand:
total++
case *instructions.WorkdirCommand:
total++
}
}
ds.cmdTotal = total
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.lastTarget()
} else {
var ok bool
target, ok = allDispatchStates.findStateByName(opt.Target)
if !ok {
return nil, 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.states {
d.commands = make([]command, len(d.stage.Commands))
for i, cmd := range d.stage.Commands {
newCmd, err := toCommand(cmd, allDispatchStates)
if err != nil {
return nil, nil, nil, err
}
d.commands[i] = newCmd
for _, src := range newCmd.sources {
if src != nil {
d.deps[src] = struct{}{}
if src.unregistered {
allDispatchStates.addState(src)
}
}
}
}
}
if has, state := hasCircularDependency(allDispatchStates.states); has {
return nil, nil, nil, errors.Errorf("circular dependency detected on stage: %s", state.stageName)
}
if len(allDispatchStates.states) == 1 {
allDispatchStates.states[0].stageName = ""
}
allStageNames := make([]string, 0, len(allDispatchStates.states))
for _, s := range allDispatchStates.states {
if s.stageName != "" {
allStageNames = append(allStageNames, s.stageName)
}
}
eg, ctx := errgroup.WithContext(ctx)
for i, d := range allDispatchStates.states {
reachable := isReachable(target, d)
// resolve image config for every stage
if d.base == nil && !d.noinit {
if d.stage.BaseName == emptyImageName {
d.state = llb.Scratch()
d.image = emptyImage(platformOpt.targetPlatform)
continue
}
func(i int, d *dispatchState) {
eg.Go(func() (err error) {
defer func() {
if err != nil {
err = parser.WithLocation(err, d.stage.Location)
}
}()
origName := d.stage.BaseName
ref, err := reference.ParseNormalizedNamed(d.stage.BaseName)
if err != nil {
return errors.Wrapf(err, "failed to parse stage name %q", d.stage.BaseName)
}
platform := d.platform
if platform == nil {
platform = &platformOpt.targetPlatform
}
d.stage.BaseName = reference.TagNameOnly(ref).String()
var isScratch bool
st, img, bi, err := opt.ContextByName(ctx, d.stage.BaseName)
if err != nil {
return err
}
if st != nil {
if img != nil {
d.image = *img
} else {
d.image = emptyImage(platformOpt.targetPlatform)
}
if bi != nil {
d.buildInfo = *bi
}
d.state = st.Platform(*platform)
d.platform = platform
return nil
}
if reachable {
prefix := "["
if opt.PrefixPlatform && platform != nil {
prefix += platforms.Format(*platform) + " "
}
prefix += "internal]"
dgst, dt, err := metaResolver.ResolveImageConfig(ctx, d.stage.BaseName, llb.ResolveImageConfigOpt{
Platform: platform,
ResolveMode: opt.ImageResolveMode.String(),
LogName: fmt.Sprintf("%s load metadata for %s", prefix, d.stage.BaseName),
})
if err != nil {
return suggest.WrapError(errors.Wrap(err, origName), origName, append(allStageNames, commonImageNames()...), true)
}
var img Image
if err := json.Unmarshal(dt, &img); err != nil {
return errors.Wrap(err, "failed to parse image config")
}
img.Created = nil
// if there is no explicit target platform, try to match based on image config
if d.platform == nil && platformOpt.implicitTarget {
p := autoDetectPlatform(img, *platform, platformOpt.buildPlatforms)
platform = &p
}
if dgst != "" {
ref, err = reference.WithDigest(ref, dgst)
if err != nil {
return err
}
}
d.stage.BaseName = ref.String()
if len(img.RootFS.DiffIDs) == 0 {
isScratch = true
// schema1 images can't return diffIDs so double check :(
for _, h := range img.History {
if !h.EmptyLayer {
isScratch = false
break
}
}
}
if !isScratch {
// if image not scratch set original image name as ref
// and actual reference as alias in binfotypes.Source
d.buildInfo.Sources = append(d.buildInfo.Sources, binfotypes.Source{
Type: binfotypes.SourceTypeDockerImage,
Ref: origName,
Alias: ref.String(),
Pin: dgst.String(),
})
}
d.image = img
}
if isScratch {
d.state = llb.Scratch()
} else {
d.state = llb.Image(d.stage.BaseName,
dfCmd(d.stage.SourceCode),
llb.Platform(*platform),
opt.ImageResolveMode,
llb.WithCustomName(prefixCommand(d, "FROM "+d.stage.BaseName, opt.PrefixPlatform, platform, nil)),
location(opt.SourceMap, d.stage.Location),
)
}
d.platform = platform
return nil
})
}(i, d)
}
}
if err := eg.Wait(); err != nil {
return nil, nil, nil, err
}
buildContext := &mutableOutput{}
ctxPaths := map[string]struct{}{}
for _, d := range allDispatchStates.states {
if !isReachable(target, d) || d.noinit {
continue
}
// collect build sources and dependencies
if len(d.buildInfo.Sources) > 0 {
buildInfo.Sources = append(buildInfo.Sources, d.buildInfo.Sources...)
}
if d.buildInfo.Deps != nil {
for name, bi := range d.buildInfo.Deps {
if buildInfo.Deps == nil {
buildInfo.Deps = make(map[string]binfotypes.BuildInfo)
}
buildInfo.Deps[name] = bi
}
}
if d.base != nil {
d.state = d.base.state
d.platform = d.base.platform
d.image = clone(d.base.image)
}
// make sure that PATH is always set
if _, ok := shell.BuildEnvs(d.image.Config.Env)["PATH"]; !ok {
var os string
if d.platform != nil {
os = d.platform.OS
}
d.image.Config.Env = append(d.image.Config.Env, "PATH="+system.DefaultPathEnv(os))
}
// initialize base metadata from image conf
for _, env := range d.image.Config.Env {
k, v := parseKeyValue(env)
d.state = d.state.AddEnv(k, v)
}
if opt.Hostname != "" {
d.state = d.state.Hostname(opt.Hostname)
}
if d.image.Config.WorkingDir != "" {
if err = dispatchWorkdir(d, &instructions.WorkdirCommand{Path: d.image.Config.WorkingDir}, false, nil); err != nil {
return nil, nil, nil, parser.WithLocation(err, d.stage.Location)
}
}
if d.image.Config.User != "" {
if err = dispatchUser(d, &instructions.UserCommand{User: d.image.Config.User}, false); err != nil {
return nil, nil, nil, parser.WithLocation(err, d.stage.Location)
}
}
d.state = d.state.Network(opt.ForceNetMode)
opt := dispatchOpt{
allDispatchStates: allDispatchStates,
metaArgs: optMetaArgs,
buildArgValues: opt.BuildArgs,
shlex: shlex,
sessionID: opt.SessionID,
buildContext: llb.NewState(buildContext),
proxyEnv: proxyEnv,
cacheIDNamespace: opt.CacheIDNamespace,
buildPlatforms: platformOpt.buildPlatforms,
targetPlatform: platformOpt.targetPlatform,
extraHosts: opt.ExtraHosts,
shmSize: opt.ShmSize,
ulimit: opt.Ulimit,
cgroupParent: opt.CgroupParent,
llbCaps: opt.LLBCaps,
sourceMap: opt.SourceMap,
}
if err = dispatchOnBuildTriggers(d, d.image.Config.OnBuild, opt); err != nil {
return nil, nil, nil, parser.WithLocation(err, d.stage.Location)
}
d.image.Config.OnBuild = nil
for _, cmd := range d.commands {
if err := dispatch(d, cmd, opt); err != nil {
return nil, nil, nil, parser.WithLocation(err, cmd.Location())
}
}
for p := range d.ctxPaths {
ctxPaths[p] = struct{}{}
}
}
// sort build sources
if len(buildInfo.Sources) > 0 {
sort.Slice(buildInfo.Sources, func(i, j int) bool {
return buildInfo.Sources[i].Ref < buildInfo.Sources[j].Ref
})
}
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(opt.ContextLocalName),
WithInternalName("load build context"),
}
if includePatterns := normalizeContextPaths(ctxPaths); includePatterns != nil {
opts = append(opts, llb.FollowPaths(includePatterns))
}
bc := llb.Local(opt.ContextLocalName, opts...)
if opt.BuildContext != nil {
bc = *opt.BuildContext
}
buildContext.Output = bc.Output()
defaults := []llb.ConstraintsOpt{
llb.Platform(platformOpt.targetPlatform),
}
if opt.LLBCaps != nil {
defaults = append(defaults, llb.WithCaps(*opt.LLBCaps))
}
st := target.state.SetMarshalDefaults(defaults...)
if !platformOpt.implicitTarget {
target.image.OS = platformOpt.targetPlatform.OS
target.image.Architecture = platformOpt.targetPlatform.Architecture
target.image.Variant = platformOpt.targetPlatform.Variant
}
return &st, &target.image, buildInfo, nil
}
func metaArgsToMap(metaArgs []instructions.KeyValuePairOptional) map[string]string {
m := map[string]string{}
for _, arg := range metaArgs {
m[arg.Key] = arg.ValueString()
}
return m
}
func toCommand(ic instructions.Command, allDispatchStates *dispatchStates) (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 = allDispatchStates.findStateByName(c.From)
if !ok {
stn = &dispatchState{
stage: instructions.Stage{BaseName: c.From, Location: ic.Location()},
deps: make(map[*dispatchState]struct{}),
unregistered: true,
}
}
} else {
stn, err = allDispatchStates.findStateByIndex(index)
if err != nil {
return command{}, err
}
}
cmd.sources = []*dispatchState{stn}
}
}
if ok := detectRunMount(&cmd, allDispatchStates); ok {
return cmd, nil
}
return cmd, nil
}
type dispatchOpt struct {
allDispatchStates *dispatchStates
metaArgs []instructions.KeyValuePairOptional
buildArgValues map[string]string
shlex *shell.Lex
sessionID string
buildContext llb.State
proxyEnv *llb.ProxyEnv
cacheIDNamespace string
targetPlatform ocispecs.Platform
buildPlatforms []ocispecs.Platform
extraHosts []llb.HostIP
shmSize int64
ulimit []pb.Ulimit
cgroupParent string
llbCaps *apicaps.CapSet
sourceMap *llb.SourceMap
}
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) {
env, err := d.state.Env(context.TODO())
if err != nil {
return "", err
}
return opt.shlex.ProcessWord(word, env)
})
if err != nil {
return err
}
}
if ex, ok := cmd.Command.(instructions.SupportsSingleWordExpansionRaw); ok {
err := ex.ExpandRaw(func(word string) (string, error) {
env, err := d.state.Env(context.TODO())
if err != nil {
return "", err
}
lex := shell.NewLex('\\')
lex.SkipProcessQuotes = true
return lex.ProcessWord(word, 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)
case *instructions.RunCommand:
err = dispatchRun(d, c, opt.proxyEnv, cmd.sources, opt)
case *instructions.WorkdirCommand:
err = dispatchWorkdir(d, c, true, &opt)
case *instructions.AddCommand:
err = dispatchCopy(d, copyConfig{
params: c.SourcesAndDest,
source: opt.buildContext,
isAddCommand: true,
cmdToPrint: c,
chown: c.Chown,
chmod: c.Chmod,
link: c.Link,
location: c.Location(),
opt: opt,
})
if err == nil {
for _, src := range c.SourcePaths {
if !strings.HasPrefix(src, "http://") && !strings.HasPrefix(src, "https://") {
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, copyConfig{
params: c.SourcesAndDest,
source: l,
isAddCommand: false,
cmdToPrint: c,
chown: c.Chown,
chmod: c.Chmod,
link: c.Link,
location: c.Location(),
opt: opt,
})
if err == nil && len(cmd.sources) == 0 {
for _, src := range c.SourcePaths {
d.ctxPaths[path.Join("/", filepath.ToSlash(src))] = struct{}{}
}
}
default:
}
return err
}
type dispatchState struct {
state llb.State
image Image
platform *ocispecs.Platform
stage instructions.Stage
base *dispatchState
noinit bool
deps map[*dispatchState]struct{}
buildArgs []instructions.KeyValuePairOptional
commands []command
ctxPaths map[string]struct{}
ignoreCache bool
cmdSet bool
unregistered bool
stageName string
cmdIndex int
cmdTotal int
prefixPlatform bool
buildInfo binfotypes.BuildInfo
}
type dispatchStates struct {
states []*dispatchState
statesByName map[string]*dispatchState
}
func newDispatchStates() *dispatchStates {
return &dispatchStates{statesByName: map[string]*dispatchState{}}
}
func (dss *dispatchStates) addState(ds *dispatchState) {
dss.states = append(dss.states, ds)
if d, ok := dss.statesByName[ds.stage.BaseName]; ok {
ds.base = d
}
if ds.stage.Name != "" {
dss.statesByName[strings.ToLower(ds.stage.Name)] = ds
}
}
func (dss *dispatchStates) findStateByName(name string) (*dispatchState, bool) {
ds, ok := dss.statesByName[strings.ToLower(name)]
return ds, ok
}
func (dss *dispatchStates) findStateByIndex(index int) (*dispatchState, error) {
if index < 0 || index >= len(dss.states) {
return nil, errors.Errorf("invalid stage index %d", index)
}
return dss.states[index], nil
}
func (dss *dispatchStates) lastTarget() *dispatchState {
return dss.states[len(dss.states)-1]
}
type command struct {
instructions.Command
sources []*dispatchState
}
func dispatchOnBuildTriggers(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.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) 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)
}
return commitToHistory(&d.image, commitMessage.String(), false, nil)
}
func dispatchRun(d *dispatchState, c *instructions.RunCommand, proxy *llb.ProxyEnv, sources []*dispatchState, dopt dispatchOpt) error {
var opt []llb.RunOption
customname := c.String()
var args []string = c.CmdLine
if len(c.Files) > 0 {
if len(args) != 1 || !c.PrependShell {
return fmt.Errorf("parsing produced an invalid run command: %v", args)
}
if heredoc := parser.MustParseHeredoc(args[0]); heredoc != nil {
if d.image.OS != "windows" && strings.HasPrefix(c.Files[0].Data, "#!") {
// This is a single heredoc with a shebang, so create a file
// and run it.
// NOTE: choosing to expand doesn't really make sense here, so
// we silently ignore that option if it was provided.
sourcePath := "/"
destPath := "/dev/pipes/"
f := c.Files[0].Name
data := c.Files[0].Data
if c.Files[0].Chomp {
data = parser.ChompHeredocContent(data)
}
st := llb.Scratch().Dir(sourcePath).File(
llb.Mkfile(f, 0755, []byte(data)),
WithInternalName("preparing inline document"),
)
mount := llb.AddMount(destPath, st, llb.SourcePath(sourcePath), llb.Readonly)
opt = append(opt, mount)
args = []string{path.Join(destPath, f)}
} else {
// Just a simple heredoc, so just run the contents in the
// shell: this creates the effect of a "fake"-heredoc, so that
// the syntax can still be used for shells that don't support
// heredocs directly.
// NOTE: like above, we ignore the expand option.
data := c.Files[0].Data
if c.Files[0].Chomp {
data = parser.ChompHeredocContent(data)
}
args = []string{data}
}
customname += fmt.Sprintf(" (%s)", summarizeHeredoc(c.Files[0].Data))
} else {
// More complex heredoc, so reconstitute it, and pass it to the
// shell to handle.
full := args[0]
for _, file := range c.Files {
full += "\n" + file.Data + file.Name
}
args = []string{full}
}
}
if c.PrependShell {
args = withShell(d.image, args)
}
env, err := d.state.Env(context.TODO())
if err != nil {
return err
}
opt = append(opt, llb.Args(args), dfCmd(c), location(dopt.sourceMap, c.Location()))
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...)
securityOpt, err := dispatchRunSecurity(c)
if err != nil {
return err
}
if securityOpt != nil {
opt = append(opt, securityOpt)
}
networkOpt, err := dispatchRunNetwork(c)
if err != nil {
return err
}
if networkOpt != nil {
opt = append(opt, networkOpt)
}
if dopt.llbCaps != nil && dopt.llbCaps.Supports(pb.CapExecMetaUlimit) == nil {
for _, u := range dopt.ulimit {
opt = append(opt, llb.AddUlimit(llb.UlimitName(u.Name), u.Soft, u.Hard))
}
}
shlex := *dopt.shlex
shlex.RawQuotes = true
shlex.SkipUnsetEnv = true
pl, err := d.state.GetPlatform(context.TODO())
if err != nil {
return err
}
opt = append(opt, llb.WithCustomName(prefixCommand(d, uppercaseCmd(processCmdEnv(&shlex, customname, env)), d.prefixPlatform, pl, env)))
for _, h := range dopt.extraHosts {
opt = append(opt, llb.AddExtraHost(h.Host, h.IP))
}
if dopt.llbCaps != nil && dopt.llbCaps.Supports(pb.CapExecMountTmpfsSize) == nil {
if dopt.shmSize > 0 {
opt = append(opt, llb.AddMount("/dev/shm", llb.Scratch(), llb.Tmpfs(llb.TmpfsSize(dopt.shmSize))))
}
}
if dopt.llbCaps != nil && dopt.llbCaps.Supports(pb.CapExecMetaCgroupParent) == nil {
if len(dopt.cgroupParent) > 0 {
opt = append(opt, llb.WithCgroupParent(dopt.cgroupParent))
}
}
d.state = d.state.Run(opt...).Root()
return commitToHistory(&d.image, "RUN "+runCommandString(args, d.buildArgs, shell.BuildEnvs(env)), true, &d.state)
}
func dispatchWorkdir(d *dispatchState, c *instructions.WorkdirCommand, commit bool, opt *dispatchOpt) 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 {
withLayer := false
if wd != "/" {
mkdirOpt := []llb.MkdirOption{llb.WithParents(true)}
if user := d.image.Config.User; user != "" {
mkdirOpt = append(mkdirOpt, llb.WithUser(user))
}
platform := opt.targetPlatform
if d.platform != nil {
platform = *d.platform
}
env, err := d.state.Env(context.TODO())
if err != nil {
return err
}
d.state = d.state.File(llb.Mkdir(wd, 0755, mkdirOpt...),
llb.WithCustomName(prefixCommand(d, uppercaseCmd(processCmdEnv(opt.shlex, c.String(), env)), d.prefixPlatform, &platform, env)),
location(opt.sourceMap, c.Location()),
)
withLayer = true
}
return commitToHistory(&d.image, "WORKDIR "+wd, withLayer, nil)
}
return nil
}
func dispatchCopy(d *dispatchState, cfg copyConfig) error {
pp, err := pathRelativeToWorkingDir(d.state, cfg.params.DestPath)
if err != nil {
return err
}
dest := path.Join("/", pp)
if cfg.params.DestPath == "." || cfg.params.DestPath == "" || cfg.params.DestPath[len(cfg.params.DestPath)-1] == filepath.Separator {
dest += string(filepath.Separator)
}
var copyOpt []llb.CopyOption
if cfg.chown != "" {
copyOpt = append(copyOpt, llb.WithUser(cfg.chown))
}
var mode *os.FileMode
if cfg.chmod != "" {
p, err := strconv.ParseUint(cfg.chmod, 8, 32)
if err == nil {
perm := os.FileMode(p)
mode = &perm
}
}
commitMessage := bytes.NewBufferString("")
if cfg.isAddCommand {
commitMessage.WriteString("ADD")
} else {
commitMessage.WriteString("COPY")
}