Noisy dishwasher pipes?

My Whirilpool Quiet Partner is anything but quiet. I had to remove the unit to replace a faulty sensor and thought I would also find the cause of the noise. I saw some others here that replaced a bearing in this same model that fixed the noise. However, after examiniing my motor I don’t believe a bearing is to blame. The motor seems solid. The shaft has no play in it.

The noise it makes sound a bit like vibrating pipes. In fact, when I turn the faucet on the noise changes or lessens (though it does not go away). If I put my hand on the copper pipe to the washer, the noise also lessens. Also, seems like the noise vibrates throughout the house because I can hear some pipes in the bathroom being noisy too while the dishwasher is running.

I should add that it is only noisy when filling with water. As the cycle runs, the washer is fine. But if it ever needs water at the beginning of a cycle, that’s when the noise occurs.
So I think that I either need replace the copper pipe with a flexible pipe. Are there any that exist? Is that recommended for a hot water dishwasher?

Or is there some sort of beather I can install on the line? Maybe the water pressure is creating a vaccum and causing the pipes to shake. But I know nothing about plumbing.

thanks for your advice!

I replaced my copper pipe with a stainless hose and it eliminated the noise problem.

Igniter on front right burner continues to spark after gas knob is turned to Off. (It does stop sparking when lit and knob is On). Cooktop Indicator light stays on when all 4 knobs are Off and right front igniter continues sparking. Have unplugged unit. No moisture around igniter. Could the right front gas switch be causing this?
How do I access the interior where the switches are located inside the cooktop?
Thank you