Add docker reset-storage command (#674)

Add `ha docker reset-storage`, which posts to the new Supervisor
endpoint POST /docker/reset-storage. Supervisor schedules a wipe of
the whole Docker storage on the next boot; all container images are
re-downloaded, while Home Assistant and app data are kept. A reboot is
required to apply the reset. Requires HAOS 18.3+.

Refs home-assistant/supervisor#6555

Author: sairon

cmd/docker.go

@@ -14,7 +14,8 @@ Home Assistant is running on. It allows you to do things like use private OCI re
 	Example: `
   ha docker info
   ha docker options
-  ha docker registries`,
+  ha docker registries
+  ha docker reset-storage`,
 }
 
 func init() {

cmd/docker_reset_storage.go

@@ -0,0 +1,70 @@
+package cmd
+
+import (
+	"log/slog"
+
+	helper "github.com/home-assistant/cli/client"
+	"github.com/spf13/cobra"
+)
+
+var dockerResetStorageCmd = &cobra.Command{
+	Use:   "reset-storage",
+	Short: "Reset the Docker storage",
+	Long: `
+This command wipes the complete Docker storage on the next reboot. All container
+images, including Supervisor, Home Assistant Core, plugins and apps, are deleted
+and downloaded again once the system is back up.
+
+Use it to recover from a corrupted or inconsistent Docker storage, for example
+when containers fail to start or images cannot be updated.
+
+Configuration and data of Home Assistant and apps are kept, they are stored
+outside of the Docker storage.
+
+Internet connectivity is required for re-download of all the container images.
+A reboot is required to apply the reset.
+`,
+	Example: `
+  ha docker reset-storage
+`,
+	ValidArgsFunction: cobra.NoFileCompletions,
+	Args:              cobra.NoArgs,
+	Run: func(cmd *cobra.Command, args []string) {
+		slog.Debug("docker reset-storage", "args", args)
+
+		section := "docker"
+		command := "reset-storage"
+
+		confirmed, err := helper.AskForConfirmation(`
+This will delete all container images on the next reboot. Supervisor, Home
+Assistant Core, plugins and apps are downloaded again afterwards, which
+requires internet connectivity. Home Assistant and app data are kept.
+
+Once confirmed, the reset will be applied on the next system reboot.
+
+Are you sure you want to proceed?`, 0)
+
+		if err != nil {
+			cmd.PrintErrln("Aborted:", err)
+			ExitWithError = true
+			return
+		}
+
+		if confirmed {
+			resp, err := helper.GenericJSONPost(section, command, nil)
+			if err != nil {
+				helper.PrintError(err)
+				ExitWithError = true
+			} else {
+				ExitWithError = !helper.ShowJSONResponse(resp)
+			}
+		} else {
+			cmd.PrintErrln("Aborted.")
+			ExitWithError = true
+		}
+	},
+}
+
+func init() {
+	dockerCmd.AddCommand(dockerResetStorageCmd)
+}