"istio.io/istio/pkg/util/sets"
)

// RunDocker builds docker images using the `docker buildx bake` commands. Buildx is the
// next-generation docker builder, and `bake` is an important part of that which allows us to
// construct a big build plan which docker can execute in parallel. This provides order of magnitude
// improves over a naive `docker build` flow when building many images.
//

			if cfg.BuildX {
				sh.ShowCmd("", "mv %s %s", src, dst)
			}
			return nil
		}
	}

	return sh.CopyFile(dst, src, perm, force)
}

// copyFile is like 'cp src dst'.
func (sh *Shell) CopyFile(dst, src string, perm fs.FileMode, force bool) error {
	if cfg.BuildN || cfg.BuildX {
		sh.ShowCmd("", "cp %s %s", src, dst)
		if cfg.BuildN {
			return nil
		}
	}

				}
			}
			continue
		}

		if cfg.BuildN {
			continue
		}

		if cleanFile[name] || cleanExt[filepath.Ext(name)] || toRemove[name] {
			removeFile(filepath.Join(p.Dir, name))
		}
	}

	if cleanI && p.Target != "" {
		if cfg.BuildN || cfg.BuildX {
			sh.ShowCmd("", "rm -f %s", p.Target)
		}
		if !cfg.BuildN {
			removeFile(p.Target)
		}
	}

	if cleanR {

	installedGOARCH string
)

// ToolExeSuffix returns the suffix for executables installed
// in build.ToolDir.
func ToolExeSuffix() string {
	if installedGOOS == "windows" {
		return ".exe"
	}
	return ""
}

// These are general "build flags" used by build and other commands.
var (
	BuildA             bool     // -a flag
	BuildBuildmode     string   // -buildmode flag

}

# kube::util::ensure-docker-buildx
# Check if we have "docker buildx" commands available
#
function kube::util::ensure-docker-buildx {
  # podman returns 0 on `docker buildx version`, docker on `docker buildx`. One of them must succeed.
  if docker buildx version >/dev/null 2>&1 || docker buildx >/dev/null 2>&1; then
    return 0
  else

integration-build-test: build-integration-test-image integration-test
test: unit-test integration-build-test
all: all-build test

+++ dirname ./build-services.sh
++ cd .
++ pwd
+ SCRIPTDIR=/work/samples/bookinfo/src
+ cd /work/samples/bookinfo/src/../../..
+ h=docker.io/user1
+ t=test1.0
+ [[ docker.io/user1 == \i\s\t\i\o ]]
+ [[ docker.io/user1 == \d\o\c\k\e\r\.\i\o\/\i\s\t\i\o ]]
+ plat=linux/amd64
+ [[ '' == \t\r\u\e ]]

	xLog, buildX := cfg.BuildXWriter(ctx)
	if buildX {
		fmt.Fprintf(xLog, "mkdir -p %s # %s %s\n", filepath.Dir(dir), typ, name)
	}
	if err := os.MkdirAll(filepath.Dir(dir), 0777); err != nil {
		return "", "", err
	}

	lockfile = dir + ".lock"
	if buildX {
		fmt.Fprintf(xLog, "# lock %s\n", lockfile)
	}

			return "", err
		}
		if cfg.BuildN || cfg.BuildX {
			sh.ShowCmd("", "ar d %s _cgo_flags", newArchive)
			if cfg.BuildN {
				// TODO(rsc): We could do better about showing the right _cgo_flags even in -n mode.
				// Either the archive is already built and we can read them out,
				// or we're printing commands to build the archive and can
				// forward the _cgo_flags directly to this step.

					}

					// Poison a.Target to catch uses later in the build.
					a.Target = "DO NOT USE - main build pseudo-cache Target"
					a.built = "DO NOT USE - main build pseudo-cache built"
					if a.json != nil {
						a.json.BuildID = a.buildID
					}
					return true
				}
				// Otherwise restore old build ID for main build.
				a.buildID = oldBuildID
			}
		}
	}