Dockerfile.linux

# Linux container for AKILIMO PaperbasedDashboard_NG
# Uses rocker/shiny — Shiny Server pre-configured, runs on any platform
# via Docker Desktop (WSL2 backend on Windows, default Linux mode).
#
# Build: docker build -f Dockerfile.linux -t akilimo-dashboard .
# Run:   docker run -p 3838:3838 akilimo-dashboard
# App:   http://localhost:3838/dashboard/

FROM rocker/shiny:4.4.2

# ── System libraries ──────────────────────────────────────────────────────────
# sf bundles its own GDAL/PROJ/GEOS on Windows; on Linux these must be present.
# Cairo is needed for off-screen PNG rendering in Shiny (no X11 on server).
RUN apt-get update && apt-get install -y --no-install-recommends \
        libgdal-dev        `# sf / raster` \
        libgeos-dev        `# sf` \
        libproj-dev        `# sf / ggspatial` \
        libssl-dev         `# httr / curl` \
        libcurl4-openssl-dev \
        libcairo2-dev      `# Cairo R package` \
        libxt-dev          `# Cairo R package` \
        libfontconfig1-dev \
        libudunits2-dev    `# units / sf` \
    && rm -rf /var/lib/apt/lists/*

# ── App ───────────────────────────────────────────────────────────────────────
# Shiny Server serves apps from /srv/shiny-server/<name>/
ENV APP_DIR=/srv/shiny-server/dashboard

COPY . ${APP_DIR}

WORKDIR ${APP_DIR}

# ── R packages ────────────────────────────────────────────────────────────────
RUN Rscript install_packages.R

# ── Data files ────────────────────────────────────────────────────────────────
# Downloads from GitHub Release v1.0.0 into data/ subfolders.
RUN Rscript setup_data.R

# ── Runtime ───────────────────────────────────────────────────────────────────
EXPOSE 3838

HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -sf http://localhost:3838/dashboard/ || exit 1

# rocker/shiny's /init starts Shiny Server with its default config
CMD ["/init"]