go build -x -tags main github.com/ds/depaas/cmd/miner
./miner -data /mnt
sudo apt install gcc-8-aarch64-linux-gnu
CC="aarch64-linux-gnu-gcc-8" \
CXX="aarch64-linux-gnu-gcc-8" \
CGO_ENABLED=1 GOOS=linux GOARCH=arm64 \
go build -x -o arm64-miner -tags main github.com/ds/depaas/cmd/miner