Here’s some revolting ‘sole’ food. A Dunkin’ employee was filmed washing his feet at a kitchen sink at the chain’s location aboard a Staten Island Ferry — prompting a city Health Department investigation, The Post has learned. An eyewitness spotted the employee lifting his tootsies and using sink water to wash his feet behind the counter and immediately began filming the stomach-churning scene, calling it “disgusting.” The footage — posted to TikTok Aug. 11 before it quickly spread across other social media platforms — shows the worker standing in front of the sink on what appears to be an Islamic...