dockerfile: Create testcases and jail directories
dockerfile: Create testcases and jail directories

basu96/crux-judge,CRUx-BPHC/crux-judge,CRUx-BPHC/crux-judge,CRUx-BPHC/crux-judge,basu96/crux-judge,basu96/crux-judge,basu96/crux-judge,basu96/crux-judge