Dockerfile.binary

# Lightweight Dockerfile that runs linkspector using a pre-built binary
# from GitHub Releases. No Node.js or npm required.
#
# Build (defaults to latest release, auto-detects architecture):
#   docker build -f Dockerfile.binary -t linkspector .
#
# Build a specific version:
#   docker build -f Dockerfile.binary --build-arg LINKSPECTOR_VERSION=v0.5.2 -t linkspector .
#
# Run:
#   docker run --rm -v "$PWD:/app" linkspector check

FROM debian:bookworm-slim

ARG LINKSPECTOR_VERSION=latest
ARG TARGETARCH

# Install Chromium and minimal dependencies
RUN apt-get update \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
    ca-certificates \
    chromium \
    curl \
    git \
    upower \
    && apt-get clean && rm -rf /var/lib/apt/lists/*

# Set up Chromium for Puppeteer (same approach as the npm Dockerfile)
ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium.wrapper

RUN echo '#!/bin/sh' > /usr/bin/chromium.wrapper \
    && echo 'exec /usr/bin/chromium --no-sandbox --headless=new --disable-gpu --enable-chrome-browser-cloud-management --remote-debugging-port=0 "$@"' >> /usr/bin/chromium.wrapper \
    && chmod ugo+x /usr/bin/chromium.wrapper

# Map Docker TARGETARCH to release asset names
# TARGETARCH is "amd64" or "arm64"; release assets use "x64" or "arm64"
RUN ARCH=$(case "${TARGETARCH}" in amd64) echo "x64" ;; arm64) echo "arm64" ;; *) echo "x64" ;; esac) \
    && if [ "${LINKSPECTOR_VERSION}" = "latest" ]; then \
         URL="https://github.com/UmbrellaDocs/linkspector/releases/latest/download/linkspector-linux-${ARCH}"; \
       else \
         URL="https://github.com/UmbrellaDocs/linkspector/releases/download/${LINKSPECTOR_VERSION}/linkspector-linux-${ARCH}"; \
       fi \
    && echo "Downloading ${URL}" \
    && curl -fSL -o /usr/local/bin/linkspector "${URL}" \
    && chmod +x /usr/local/bin/linkspector

# Create a non-root user
RUN useradd --create-home --shell /bin/bash linkspector
ENV USER=linkspector

# Create app directory for mounting host files
RUN mkdir /app && chown linkspector:linkspector /app

USER linkspector
WORKDIR /app

# Sanity check — verify the binary is executable
RUN linkspector --help > /dev/null 2>&1 || linkspector --version || true

ENTRYPOINT ["linkspector"]