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

1 files changed, 13 insertions, 0 deletions

diff --git a/cmd/podman/common.go b/cmd/podman/common.go
index d9216850f..797e74c98 100644
--- a/cmd/podman/common.go
+++ b/cmd/podman/common.go
@@ -10,6 +10,7 @@ import (
 	"github.com/containers/storage"
 	"github.com/fatih/camelcase"
 	"github.com/pkg/errors"
+	"github.com/projectatomic/buildah"
 	"github.com/urfave/cli"
 )
 
@@ -406,3 +407,15 @@ var createFlags = []cli.Flag{
 		Usage: "Working `directory inside the container",
 	},
 }
+
+func getFormat(c *cli.Context) (string, error) {
+	format := strings.ToLower(c.String("format"))
+	if strings.HasPrefix(format, buildah.OCI) {
+		return buildah.OCIv1ImageManifest, nil
+	}
+
+	if strings.HasPrefix(format, buildah.DOCKER) {
+		return buildah.Dockerv2ImageManifest, nil
+	}
+	return "", errors.Errorf("unrecognized image type %q", format)
+}