Alpine docker image support

[r2DoesInc]

When using the linux binary I am unable to run teller-cli on an alpine based image.

$  docker run -it alpine
Unable to find image 'alpine:latest' locally
latest: Pulling from library/alpine
ec99f8b99825: Pull complete 
Digest: sha256:b89d9c93e9ed3597455c90a0b88a8bbb5cb7188438f70953fede212a0c4394e0
Status: Downloaded newer image for alpine:latest

# wget https://github.com/tellerops/teller/releases/download/v2.0.7/teller-x86_64-linux.tar.xz
Connecting to github.com (140.82.114.4:443)
Connecting to objects.githubusercontent.com (185.199.109.133:443)
saving to 'teller-x86_64-linux.tar.xz'
teller-x86_64-linux. 100% |**************************************************************************************************************************************************************| 5769k  0:00:00 ETA
'teller-x86_64-linux.tar.xz' saved

# tar -xf teller-x86_64-linux.tar.xz 
# cd teller-x86_64-linux/
# ./teller
/bin/sh: ./teller: not found