a clothes drier takes a lot of shear force if loaded with sheets etc.
Normally they anchor in concrete for good reason. ( or hammer into soil)
a reasonable amount of pole has to go into the socket to be safe and not fall over.
I guess that you could find a piece of tube and weld it to a flat plate, then drill a hole into the decking and surface mount the thing? Something like a flag pole or boat fitting might work but you'd need to be aware that it would put a lot of force on the decking boards and might just rip them out.
ideally you need to sink the tube into the ground to prevent that
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