package images import ( "bufio" "fmt" "os" "strings" "github.com/containers/common/pkg/completion" "github.com/containers/podman/v3/cmd/podman/common" "github.com/containers/podman/v3/cmd/podman/registry" "github.com/containers/podman/v3/cmd/podman/utils" "github.com/containers/podman/v3/cmd/podman/validate" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/containers/podman/v3/pkg/specgenutil" "github.com/spf13/cobra" ) var ( pruneDescription = `Removes dangling or unused images from local storage.` pruneCmd = &cobra.Command{ Use: "prune [options]", Args: validate.NoArgs, Short: "Remove unused images", Long: pruneDescription, RunE: prune, ValidArgsFunction: completion.AutocompleteNone, Example: `podman image prune`, } pruneOpts = entities.ImagePruneOptions{} force bool filter = []string{} ) func init() { registry.Commands = append(registry.Commands, registry.CliCommand{ Command: pruneCmd, Parent: buildxCmd, }) registry.Commands = append(registry.Commands, registry.CliCommand{ Command: pruneCmd, Parent: imageCmd, }) flags := pruneCmd.Flags() flags.BoolVarP(&pruneOpts.All, "all", "a", false, "Remove all images not in use by containers, not just dangling ones") flags.BoolVarP(&pruneOpts.External, "external", "", false, "Remove images even when they are used by external containers (e.g., by build containers)") flags.BoolVarP(&force, "force", "f", false, "Do not prompt for confirmation") filterFlagName := "filter" flags.StringArrayVar(&filter, filterFlagName, []string{}, "Provide filter values (e.g. 'label==')") _ = pruneCmd.RegisterFlagCompletionFunc(filterFlagName, common.AutocompletePruneFilters) } func prune(cmd *cobra.Command, args []string) error { if !force { reader := bufio.NewReader(os.Stdin) fmt.Printf("%s", createPruneWarningMessage(pruneOpts)) answer, err := reader.ReadString('\n') if err != nil { return err } if strings.ToLower(answer)[0] != 'y' { return nil } } filterMap, err := specgenutil.ParseFilters(filter) if err != nil { return err } for k, v := range filterMap { for _, val := range v { pruneOpts.Filter = append(pruneOpts.Filter, fmt.Sprintf("%s=%s", k, val)) } } results, err := registry.ImageEngine().Prune(registry.GetContext(), pruneOpts) if err != nil { return err } return utils.PrintImagePruneResults(results, false) } func createPruneWarningMessage(pruneOpts entities.ImagePruneOptions) string { question := "Are you sure you want to continue? [y/N] " if pruneOpts.All { return "WARNING! This command removes all images without at least one container associated with them.\n" + question } return "WARNING! This command removes all dangling images.\n" + question }