# DWD-Regenradar-Pipeline: GDAL (decode/warp/tile) + go-pmtiles (MBTiles → PMTiles)
FROM ghcr.io/osgeo/gdal:alpine-normal-latest

# go-pmtiles-CLI (statisches Binary)
ARG PMTILES_VERSION=1.22.1
ARG TARGETARCH
RUN ARCH=$([ "$TARGETARCH" = "arm64" ] && echo arm64 || echo x86_64) && \
    wget -qO /tmp/pmtiles.tar.gz \
      "https://github.com/protomaps/go-pmtiles/releases/download/v${PMTILES_VERSION}/go-pmtiles_${PMTILES_VERSION}_Linux_${ARCH}.tar.gz" && \
    tar xzf /tmp/pmtiles.tar.gz -C /usr/local/bin pmtiles && \
    rm /tmp/pmtiles.tar.gz && pmtiles version || true

COPY make_radar_tiles.py /app/make_radar_tiles.py
WORKDIR /app
CMD ["python3", "/app/make_radar_tiles.py"]