Ethereum staking - Voluntary validator exit file

Hi there,
I wonder if there is a simple way to create a voluntary validator exit file with a dappnode eth2 validator ? Imagine my dappnode is stolen, can’t run an other dappnode for fear of being slashed if the old is not offline… how i could exit my validator and withdraw my principal (32eth) on the withdrawal credentials ? Best way seem to have json voluntary exit file to broadcast directly from or other…
Thanks for those who can help me