feat: add option for docker image rebuild (#878)

Adds option to rebuild local action docker images

Fixed up README due to missing flags after
PR #714 and #716

Signed-off-by: hackercat <me@hackerc.at>

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

cmd/root.go

@@ -45,6 +45,7 @@ func Execute(ctx context.Context, version string) {
 	rootCmd.Flags().BoolVarP(&input.reuseContainers, "reuse", "r", false, "reuse action containers to maintain state")
 	rootCmd.Flags().BoolVarP(&input.bindWorkdir, "bind", "b", false, "bind working directory to container, rather than copy")
 	rootCmd.Flags().BoolVarP(&input.forcePull, "pull", "p", false, "pull docker image(s) even if already present")
+	rootCmd.Flags().BoolVarP(&input.forceRebuild, "rebuild", "", false, "rebuild local action docker image(s) even if already present")
 	rootCmd.Flags().BoolVarP(&input.autodetectEvent, "detect-event", "", false, "Use first event type from workflow as event that triggered the workflow")
 	rootCmd.Flags().StringVarP(&input.eventPath, "eventpath", "e", "", "path to event JSON file")
 	rootCmd.Flags().StringVar(&input.defaultBranch, "defaultbranch", "", "the name of the main branch")
@@ -260,6 +261,7 @@ func newRunCommand(ctx context.Context, input *Input) func(*cobra.Command, []str
 			EventPath:             input.EventPath(),
 			DefaultBranch:         defaultbranch,
 			ForcePull:             input.forcePull,
+			ForceRebuild:          input.forceRebuild,
 			ReuseContainers:       input.reuseContainers,
 			Workdir:               input.Workdir(),
 			BindWorkdir:           input.bindWorkdir,