#!/usr/bin/env bash
# Build the SM121 DeepSeek-V4-Flash-Vision-Exp image. The generic driver
# forwards every KEY=VAL pin in versions.env as a --build-arg to the
# Dockerfile; TAG and BASE_IMAGE can be overridden via the environment for
# the fork comparison (TAG=dsv4-flash-vision-eugr:local and
# TAG=dsv4-flash-vision-aiden:local from the same context).
set -euo pipefail
cd "$(dirname "$0")"
TAG="${TAG:-dsv4-flash-vision:local}"

ARGS=()
while IFS= read -r line; do
    case "$line" in
        ''|\#*) continue ;;
    esac
    key="${line%%=*}"; val="${line#*=}"
    val="${val%\"}"; val="${val#\"}"
    [ -n "$key" ] && ARGS+=(--build-arg "${key}=${val}")
done < versions.env
[ -n "${BASE_IMAGE:-}" ] && ARGS+=(--build-arg "BASE_IMAGE=${BASE_IMAGE}")

echo "=== Building ${TAG} ==="
# Persistent buildkit cache (per node, shared across image dirs): the
# version-independent stages (apt, torch, CUDA base) are reused across
# rebuilds — only the pinned source stages (vllm/b12x/…) re-download and
# re-compile. Override the dir with SM121_BUILDKIT_CACHE if desired.
CACHE_DIR="${SM121_BUILDKIT_CACHE:-$HOME/.cache/sm121-buildkit}"
mkdir -p "${CACHE_DIR}"
docker buildx build "${ARGS[@]}" --cache-from "type=local,src=${CACHE_DIR}" \
    --cache-to "type=local,dest=${CACHE_DIR},mode=max" \
    --progress=plain --load -t "${TAG}" -f Dockerfile . 2>&1
echo "=== Done: ${TAG} ==="