refactor: pull and rebuild docker by default (#1569)

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

cmd/root.go

@@ -52,8 +52,8 @@ func Execute(ctx context.Context, version string) {
 	rootCmd.Flags().StringArrayVarP(&input.platforms, "platform", "P", []string{}, "custom image to use per platform (e.g. -P ubuntu-18.04=nektos/act-environments-ubuntu:18.04)")
 	rootCmd.Flags().BoolVarP(&input.reuseContainers, "reuse", "r", false, "don't remove container(s) on successfully completed workflow(s) to maintain state between runs")
 	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.forcePull, "pull", "p", true, "pull docker image(s) even if already present")
+	rootCmd.Flags().BoolVarP(&input.forceRebuild, "rebuild", "", true, "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")