#!/bin/sh
set -e

IMAGE="${IMAGE:-docker-pruner}"
TAG="${TAG:-latest}"
DOCKER_GID="${DOCKER_GID:-$(stat -c '%g' /var/run/docker.sock)}"
SUPERCRONIC_VERSION="${SUPERCRONIC_VERSION:-0.2.33}"
ALPINE_VERSION="${ALPINE_VERSION:-3.21}"

if ! docker buildx inspect multibuilder > /dev/null 2>&1; then
    echo "Creating multibuilder..."
    docker buildx create --name multibuilder --use
else
    docker buildx use multibuilder
fi

echo "Building ${IMAGE}:${TAG} for linux/amd64 and linux/arm64"
echo "  Alpine:      ${ALPINE_VERSION}"
echo "  Supercronic: ${SUPERCRONIC_VERSION}"
echo "  DOCKER_GID:  ${DOCKER_GID}"

docker buildx build \
    --platform linux/amd64,linux/arm64 \
    --build-arg ALPINE_VERSION="${ALPINE_VERSION}" \
    --build-arg SUPERCRONIC_VERSION="${SUPERCRONIC_VERSION}" \
    --build-arg DOCKER_GID="${DOCKER_GID}" \
    --tag "${IMAGE}:${TAG}" \
    .