The 30-year-old man was injured during the terrifying hate-fueled incident in Gordon Street at the weekend.
He was subjected to a torrent of racist abuse, before being viciously attacked.
Detectives said it happened outside the Co-op shop at around 11.50pm on Saturday.
The victim received treatment for facial and shoulder injuries at hospital.
Police believe revellers who were in Gordon Street could hold the key to catching the attacker.
Officers said the suspect is described as white, 6ft, and of stocky build.
He was wearing a light coloured top.
Detective Constable Tony Brady, City Centre Police Office, appealed for witnesses to come forward.
He said:" Officers have been carrying out inquiries in the local area and studying CCTV footage in an effort to gather information on the man responsible.
"Gordon Street would have been busy with people on nights out.
"I would urge anyone who witnessed this crime, or has any information that may assist enquiries to contact police."
Anyone with any information is asked to contact Police Scotland on 101.