bib: deprecate --local for --pull

Pulling container images before building would break in the case of
authenticated images on podman machine, since the auth file lives on the
host and not podman machine and won't know about it.

This commit silently deprecates the `--local` flag, meaning the flag can
still be passed by the user, without any effects and without warning the user.
This, however, does put the requirement on the user to ensure that the container
is in local storage before initiating the build.

bib/cmd/bootc-image-builder/main.go

@@ -176,7 +176,6 @@ func manifestFromCobra(cmd *cobra.Command, args []string) ([]byte, *mTLSConfig,
 	rpmCacheRoot, _ := cmd.Flags().GetString("rpmmd")
 	targetArch, _ := cmd.Flags().GetString("target-arch")
 	tlsVerify, _ := cmd.Flags().GetBool("tls-verify")
-	localStorage, _ := cmd.Flags().GetBool("local")
 	rootFs, _ := cmd.Flags().GetString("rootfs")
 
 	if targetArch != "" && arch.FromString(targetArch) != arch.Current() {
@@ -193,10 +192,8 @@ func manifestFromCobra(cmd *cobra.Command, args []string) ([]byte, *mTLSConfig,
 	}
 	// TODO: add "target-variant", see https://github.com/osbuild/bootc-image-builder/pull/139/files#r1467591868
 
-	if localStorage {
-		if err := setup.ValidateHasContainerStorageMounted(); err != nil {
-			return nil, nil, fmt.Errorf("local storage not working, did you forget -v /var/lib/containers/storage:/var/lib/containers/storage? (%w)", err)
-		}
+	if err := setup.ValidateHasContainerStorageMounted(); err != nil {
+		return nil, nil, fmt.Errorf("could not access container storage, did you forget -v /var/lib/containers/storage:/var/lib/containers/storage? (%w)", err)
 	}
 
 	buildType, err := NewBuildType(imgTypes)
@@ -209,21 +206,6 @@ func manifestFromCobra(cmd *cobra.Command, args []string) ([]byte, *mTLSConfig,
 		return nil, nil, fmt.Errorf("cannot read config: %w", err)
 	}
 
-	// If --local wasn't given, always pull the container.
-	// If the user mount a container storage inside bib (without --local), the code will try to pull
-	// a newer version of the container even if an older one is already present. This doesn't match
-	// how `podman run`` behaves by default, but it matches the bib's behaviour before the switch
-	// to using containers storage in all code paths happened.
-	// We might want to change this behaviour in the future to match podman.
-	if !localStorage {
-		logrus.Infof("Pulling image %s (arch=%s)\n", imgref, cntArch)
-		if output, err := exec.Command("podman", "pull", "--arch", cntArch.String(), fmt.Sprintf("--tls-verify=%v", tlsVerify), imgref).CombinedOutput(); err != nil {
-			return nil, nil, fmt.Errorf("failed to pull container image: %w\n%s", err, output)
-		}
-	} else {
-		logrus.Debug("Using local container")
-	}
-
 	cntSize, err := getContainerSize(imgref)
 	if err != nil {
 		return nil, nil, fmt.Errorf("cannot get container size: %w", err)