bashbrew-arch   variants
amd64    jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12
arm32v6  jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12
arm32v7  jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12
arm64v8  jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12
i386     jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12
ppc64le  jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12
s390x    jessie,jessie-slim,stretch,stretch-slim,buster,buster-slim,alpine3.9,alpine3.10,alpine3.11,alpine3.12