Ireland captain Caelan Doris said the team made a clear step up in Friday's thrilling victory over Argentina, but he knows further improvements are needed for future games.

Ireland edged out Argentina by a 22-19 scoreline in Dublin, bouncing back after suffering their first home defeat in more than three years versus New Zealand last week.

The hosts made a flying start with two tries in the opening five minutes, though Argentina threatened to fight back by scoring all 10 points in a second half punctuated by penalties.

The Pumas spent the closing minutes camped in Ireland's 22 but were unable to make the pressure count, and Doris' primary feeling at the full-time whistle was one of relief.

"It went right down to the wire there. We were happy with how it started. There was a good feeling through the warm-up and that carried over to the start," he told TNT Sports.

"I felt we were in a pretty good position at half-time and their quality showed in the second half.

"It was back and forth and our discipline was probably a factor again. We got the result, which was the most pleasing thing after last week."

Ireland were into double figures for penalties as early as the 54th minute and received two yellow cards, prompting Doris to demand greater discipline in their remaining Autumn internationals versus Fiji and Australia.  

"We want a better performance. Discipline is one thing that needs to improve, but we are continuing to grow as a group," he said.

"I think today was a bit of a step up from last week but we feel like there is definitely more in us.

"A more complete performance is what we are asking for over the next couple of weeks, and we're going to need it."