docker: make blockchain persistant
docker: make blockchain persistant

aakselrod/lnd,aakselrod/lnd,bryanvu/lnd,AndrewSamokhvalov/lnd,LightningNetwork/lnd,bryanvu/lnd,LightningNetwork/lnd,ddustin/lnd,ddustin/lnd,AndrewSamokhvalov/lnd