SSIS Date in derived column as yyyy-mm-dd format

SSIS Derived Column expression variant:

(DT_STR, 4, 1252) DATEPART("yy" , GETDATE())  + "-" + 
RIGHT("0" + (DT_STR, 2, 1252) DATEPART("mm" , GETDATE()), 2)  + 
"-" + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("dd" , GETDATE()), 2)

I usually use unicode:

 SUBSTRING((DT_WSTR, 4)(GETDATE()), 1, 4)

(DT_WSTR,10)(DT_DBDATE)(GETDATE())