FROM docker.io/alpine:edge

RUN apk add --no-cache buildah

RUN 	adduser build; \
	echo "build:100000:65536" | tee /etc/subuid > /etc/subgid; \
	mkdir -p /home/build/.local/share/containers; \
	chown -R build:build /home/build

# Use chroot isolation
ENV BUILDAH_ISOLATION=chroot

USER build
WORKDIR /home/build