# Dockerfile.iso-builder — Build KHY OS ISO inside a container
# Works on Windows (Docker Desktop), macOS, and Linux.
#
# Usage:
#   docker build -t khy-iso-builder -f scripts/alpine/Dockerfile.iso-builder .
#   docker run --rm -v "$(pwd)/dist:/out" khy-iso-builder
#
# The ISO will appear at dist/khy-os.iso on the host.

FROM alpine:3.23 AS builder

# Keep builder image minimal: only tools required by build-khy-os-iso.sh preflight
# and host-side ISO assembly. Runtime packages for KHY OS are installed inside the
# chroot rootfs by build-khy-os-iso.sh, not here.
RUN apk add --no-cache \
    bash coreutils findutils grep sed \
    wget rsync tar \
    grub grub-bios grub-efi xorriso mtools \
    squashfs-tools \
    ca-certificates

COPY . /src

# The build script needs chroot + mount, which require --privileged
# or at minimum CAP_SYS_ADMIN + CAP_SYS_CHROOT.
ENTRYPOINT ["bash", "/src/scripts/alpine/build-khy-os-iso.sh", "--output", "/out/khy-os.iso"]