remote controller: Fix entrypoint interaction bugs

Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>

monitor/commands/exec.go

@@ -41,6 +41,7 @@ func (cm *ExecCmd) Exec(ctx context.Context, args []string) error {
 	cfg := controllerapi.InvokeConfig{
 		Entrypoint: []string{args[1]},
 		Cmd:        args[2:],
+		NoCmd:      false,
 		// TODO: support other options as well via flags
 		Env:  cm.invokeConfig.Env,
 		User: cm.invokeConfig.User,

monitor/commands/rollback.go

@@ -47,6 +47,7 @@ func (cm *RollbackCmd) Exec(ctx context.Context, args []string) error {
 		if len(cmds) > 0 {
 			cfg.Entrypoint = []string{cmds[0]}
 			cfg.Cmd = cmds[1:]
+			cfg.NoCmd = false
 		}
 	}
 	id := cm.m.Rollback(ctx, cfg)