Remove build.sh in preparation for merge

#!/bin/bash

get_latest() { :; }

get_version() {

	docker run --rm $1 nginx -V 2>&1 |

    sed -n '/nginx version:/s/.*nginx\///p'

}

build() {

	docker_build \

		${UPSTREAM_VERSION:+--build-arg nginx_version="${UPSTREAM_VERSION}"} \

		--tag $1

}