fix(container): use $variable-prefix (#32201)
fix(container): use $variable-prefix (#32201)

Missed that while merging.
m5o/bootstrap,twbs/bootstrap,inway/bootstrap,twbs/bootstrap,coliff/bootstrap,GerHobbelt/bootstrap,tjkohli/bootstrap,m5o/bootstrap,coliff/bootstrap,inway/bootstrap,tjkohli/bootstrap,inway/bootstrap,GerHobbelt/bootstrap,GerHobbelt/bootstrap