I have done that, basically you add a solenoid valve so it cant leak,
and a drain to the sewer. I cheated put my dishwasher across from the
sink, there wasnt space under the sink. for this reason mine drains
into the basement washtub.
you need a vacxuum break or loop in drain line to prevent siphoning.
often the dishwasher manufacturer has a portable to regular conversion
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