Vendor in latest projectatomic/buildah

This will help document the defaults in podman build.

podman build --help will now show the defaults and mention
the environment variables that can be set to change them.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #1364
Approved by: mheon

vendor/github.com/projectatomic/buildah/buildah.go

@@ -178,6 +178,8 @@ type Builder struct {
 	CommonBuildOpts *CommonBuildOptions
 	// TopLayer is the top layer of the image
 	TopLayer string
+	// Format for the build Image
+	Format string
 }
 
 // BuilderInfo are used as objects to display container information
@@ -360,6 +362,8 @@ type BuilderOptions struct {
 	DropCapabilities []string
 
 	CommonBuildOpts *CommonBuildOptions
+	// Format for the container image
+	Format string
 }
 
 // ImportOptions are used to initialize a Builder from an existing container

vendor/github.com/projectatomic/buildah/common.go

@@ -7,6 +7,13 @@ import (
 	"github.com/containers/image/types"
 )
 
+const (
+	// OCI used to define the "oci" image format
+	OCI = "oci"
+	// DOCKER used to define the "docker" image format
+	DOCKER = "docker"
+)
+
 func getCopyOptions(reportWriter io.Writer, sourceSystemContext *types.SystemContext, destinationSystemContext *types.SystemContext, manifestType string) *cp.Options {
 	return &cp.Options{
 		ReportWriter:          reportWriter,

vendor/github.com/projectatomic/buildah/config.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"os"
-	"path/filepath"
 	"runtime"
 	"strings"
 	"time"
@@ -12,9 +11,11 @@ import (
 	"github.com/containers/image/manifest"
 	"github.com/containers/image/transports"
 	"github.com/containers/image/types"
+	"github.com/containers/storage/pkg/stringid"
 	ociv1 "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
 	"github.com/projectatomic/buildah/docker"
+	"github.com/sirupsen/logrus"
 )
 
 // unmarshalConvertedConfig obtains the config blob of img valid for the wantedManifestMIMEType format
@@ -107,8 +108,8 @@ func (b *Builder) fixupConfig() {
 	if b.Architecture() == "" {
 		b.SetArchitecture(runtime.GOARCH)
 	}
-	if b.WorkDir() == "" {
-		b.SetWorkDir(string(filepath.Separator))
+	if b.Format == Dockerv2ImageManifest && b.Hostname() == "" {
+		b.SetHostname(stringid.TruncateID(stringid.GenerateRandomID()))
 	}
 }
 
@@ -218,6 +219,9 @@ func (b *Builder) ClearOnBuild() {
 // Note: this setting is not present in the OCIv1 image format, so it is
 // discarded when writing images using OCIv1 formats.
 func (b *Builder) SetOnBuild(onBuild string) {
+	if onBuild != "" && b.Format != Dockerv2ImageManifest {
+		logrus.Errorf("ONBUILD is not supported for OCI Image formats, %s will be ignored. Must use `docker` format", onBuild)
+	}
 	b.Docker.Config.OnBuild = append(b.Docker.Config.OnBuild, onBuild)
 }
 
@@ -247,6 +251,10 @@ func (b *Builder) Shell() []string {
 // Note: this setting is not present in the OCIv1 image format, so it is
 // discarded when writing images using OCIv1 formats.
 func (b *Builder) SetShell(shell []string) {
+	if len(shell) > 0 && b.Format != Dockerv2ImageManifest {
+		logrus.Errorf("SHELL is not supported for OCI Image format, %s will be ignored. Must use `docker` format", shell)
+	}
+
 	b.Docker.Config.Shell = copyStringSlice(shell)
 }
 
@@ -327,7 +335,10 @@ func (b *Builder) SetCmd(cmd []string) {
 // Entrypoint returns the command to be run for containers built from images
 // built from this container.
 func (b *Builder) Entrypoint() []string {
-	return copyStringSlice(b.OCIv1.Config.Entrypoint)
+	if len(b.OCIv1.Config.Entrypoint) > 0 {
+		return copyStringSlice(b.OCIv1.Config.Entrypoint)
+	}
+	return nil
 }
 
 // SetEntrypoint sets the command to be run for in containers built from images
@@ -416,7 +427,10 @@ func (b *Builder) Volumes() []string {
 	for k := range b.OCIv1.Config.Volumes {
 		v = append(v, k)
 	}
-	return v
+	if len(v) > 0 {
+		return v
+	}
+	return nil
 }
 
 // AddVolume adds a location to the image's list of locations which should be
@@ -460,6 +474,9 @@ func (b *Builder) Hostname() string {
 // Note: this setting is not present in the OCIv1 image format, so it is
 // discarded when writing images using OCIv1 formats.
 func (b *Builder) SetHostname(name string) {
+	if name != "" && b.Format != Dockerv2ImageManifest {
+		logrus.Errorf("HOSTNAME is not supported for OCI Image format, hostname %s will be ignored. Must use `docker` format", name)
+	}
 	b.Docker.Config.Hostname = name
 }
 
@@ -474,6 +491,9 @@ func (b *Builder) Domainname() string {
 // Note: this setting is not present in the OCIv1 image format, so it is
 // discarded when writing images using OCIv1 formats.
 func (b *Builder) SetDomainname(name string) {
+	if name != "" && b.Format != Dockerv2ImageManifest {
+		logrus.Errorf("DOMAINNAME is not supported for OCI Image format, domainname %s will be ignored. Must use `docker` format", name)
+	}
 	b.Docker.Config.Domainname = name
 }
 
@@ -493,6 +513,9 @@ func (b *Builder) Comment() string {
 // Note: this setting is not present in the OCIv1 image format, so it is
 // discarded when writing images using OCIv1 formats.
 func (b *Builder) SetComment(comment string) {
+	if comment != "" && b.Format != Dockerv2ImageManifest {
+		logrus.Errorf("COMMENT is not supported for OCI Image format, comment %s will be ignored. Must use `docker` format", comment)
+	}
 	b.Docker.Comment = comment
 }
 

vendor/github.com/projectatomic/buildah/imagebuildah/build.go

@@ -34,11 +34,9 @@ import (
 )
 
 const (
-	PullIfMissing       = buildah.PullIfMissing
-	PullAlways          = buildah.PullAlways
-	PullNever           = buildah.PullNever
-	OCIv1ImageFormat    = buildah.OCIv1ImageManifest
-	Dockerv2ImageFormat = buildah.Dockerv2ImageManifest
+	PullIfMissing = buildah.PullIfMissing
+	PullAlways    = buildah.PullAlways
+	PullNever     = buildah.PullNever
 
 	Gzip         = archive.Gzip
 	Bzip2        = archive.Bzip2
@@ -114,7 +112,7 @@ type BuildOptions struct {
 	ReportWriter io.Writer
 	// OutputFormat is the format of the output image's manifest and
 	// configuration data.
-	// Accepted values are OCIv1ImageFormat and Dockerv2ImageFormat.
+	// Accepted values are buildah.OCIv1ImageManifest and buildah.Dockerv2ImageManifest.
 	OutputFormat string
 	// SystemContext holds parameters used for authentication.
 	SystemContext *types.SystemContext
@@ -640,6 +638,7 @@ func (b *Executor) Prepare(ctx context.Context, ib *imagebuilder.Builder, node *
 		IDMappingOptions:      b.idmappingOptions,
 		CommonBuildOpts:       b.commonBuildOptions,
 		DefaultMountsFilePath: b.defaultMountsFilePath,
+		Format:                b.outputFormat,
 	}
 	builder, err := buildah.NewBuilder(ctx, b.store, builderOptions)
 	if err != nil {

vendor/github.com/projectatomic/buildah/new.go

@@ -339,6 +339,7 @@ func newBuilder(ctx context.Context, store storage.Store, options BuilderOptions
 		CommonBuildOpts:  options.CommonBuildOpts,
 		TopLayer:         topLayer,
 		Args:             options.Args,
+		Format:           options.Format,
 	}
 
 	if options.Mount {

vendor/github.com/projectatomic/buildah/pkg/cli/common.go

@@ -10,12 +10,12 @@ import (
 	"strings"
 
 	"github.com/opencontainers/runtime-spec/specs-go"
+	"github.com/projectatomic/buildah"
 	"github.com/projectatomic/buildah/util"
 	"github.com/urfave/cli"
 )
 
 var (
-	runtime     = util.Runtime()
 	usernsFlags = []cli.Flag{
 		cli.StringFlag{
 			Name:  "userns",
@@ -113,7 +113,8 @@ var (
 		},
 		cli.StringFlag{
 			Name:  "format",
-			Usage: "`format` of the built image's manifest and metadata",
+			Usage: "`format` of the built image's manifest and metadata. Use BUILDAH_FORMAT environment variable to override.",
+			Value: DefaultFormat(),
 		},
 		cli.StringFlag{
 			Name:  "iidfile",
@@ -121,7 +122,8 @@ var (
 		},
 		cli.StringFlag{
 			Name:  "isolation",
-			Usage: "`type` of process isolation to use",
+			Usage: "`type` of process isolation to use. Use BUILDAH_ISOLATION environment variable to override.",
+			Value: DefaultIsolation(),
 		},
 		cli.StringSliceFlag{
 			Name:  "label",
@@ -129,7 +131,7 @@ var (
 		},
 		cli.BoolFlag{
 			Name:  "layers",
-			Usage: fmt.Sprintf("cache intermediate layers during build (default %t)", UseLayers()),
+			Usage: fmt.Sprintf("cache intermediate layers during build. Use BUILDAH_LAYERS environment variable to override. (default %t)", UseLayers()),
 		},
 		cli.BoolFlag{
 			Name:  "no-cache",
@@ -161,8 +163,8 @@ var (
 		},
 		cli.StringFlag{
 			Name:  "runtime",
-			Usage: "`path` to an alternate runtime",
-			Value: runtime,
+			Usage: "`path` to an alternate runtime. Use BUILDAH_RUNTIME environment variable to override.",
+			Value: util.Runtime(),
 		},
 		cli.StringSliceFlag{
 			Name:  "runtime-flag",
@@ -260,3 +262,21 @@ func UseLayers() bool {
 	}
 	return false
 }
+
+// DefaultFormat returns the default image format
+func DefaultFormat() string {
+	format := os.Getenv("BUILDAH_FORMAT")
+	if format != "" {
+		return format
+	}
+	return buildah.OCI
+}
+
+// DefaultIsolation returns the default image format
+func DefaultIsolation() string {
+	isolation := os.Getenv("BUILDAH_ISOLATION")
+	if isolation != "" {
+		return isolation
+	}
+	return buildah.OCI
+}