#!/bin/bash
set -eou pipefail
: ${GUIX_BINARY_VERSION:=1.0.1}
: ${DOCKER_CONTAINER_NAME:=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 13 ; echo '')}

: ${DOCKERFILE_PATH:=Dockerfile}
: ${IMAGE_NAME:=guix:${GUIX_BINARY_VERSION}}

trap "docker rm -f ${DOCKER_CONTAINER_NAME}" ERR EXIT INT

docker rm -f ${DOCKER_CONTAINER_NAME} || true

docker build --build-arg GUIX_BINARY_VERSION=${GUIX_BINARY_VERSION} -f ${DOCKERFILE_PATH} -t ${IMAGE_NAME} .

# Build latest guix version too

docker run -d --name ${DOCKER_CONTAINER_NAME} --privileged $IMAGE_NAME
docker exec -i ${DOCKER_CONTAINER_NAME} sh <<"EOF"
  set -eou pipefail
  guix pull
  guix gc --delete-generations --optimize
EOF
docker commit ${DOCKER_CONTAINER_NAME} guix:latest