Dogecoin is showing a bullish signal, bouncing off the lower trendline of a multi-year descending triangle.Technical analysis suggests that Dogecoin could surpass its 2021 all-time high and reach $2.A potential pullback to $0.4 is possible before resuming an upward climb towards $1.Current short-term performance and the ability to hold above $0.17 will be crucial for a bullish outlook.