https://github.com/hlandau/acme/releases
Follow instructions, but dont simply copy them:
# Download a **non_cgo** tar.gz into /usr/local/
$ cd /usr/local
$ wget https://github.com/hlandau/acme/releases/download/v0.0.67/acmetool-v0.0.67-linux_amd64.tar.gz