This image is a base image for Iron.io's set of tiny images. Currently, it's just the alpine OS image.
First, be sure to get the latest alpine:
docker pull alpine
docker pull alpine:edge
Then build it:
docker build -t iron/base:latest --no-cache .
Tag it with Alpine version, run docker run --rm iron/base cat /etc/os-release
to check version.
docker tag iron/base:latest iron/base:X.Y.Z
Push:
docker push iron/base