# -------------------------------------------------------------
# Stage 1: Build the MkDocs site
# -------------------------------------------------------------
FROM python:3.11-slim AS builder

# 1) Install build prerequisites
RUN apt-get update \
 && apt-get install -y --no-install-recommends \
      gcc git rsync \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# 2) Copy and install dependencies (including mkdocs)
COPY requirements.txt mkdocs.yml ./
RUN pip install --no-cache-dir -r requirements.txt mkdocs

# 3) Copy your docs source
COPY docs/ ./docs
# If you have extra markdown or assets outside docs/, add more COPY lines here

# 4) Build the static site into /app/site
RUN mkdocs build --clean --site-dir site


# -------------------------------------------------------------
# Stage 2: Deployer
# -------------------------------------------------------------
FROM alpine:3.18 AS deployer

# we need rsync in this stage
RUN apk add --no-cache rsync

WORKDIR /app

# Bring the built site in
COPY --from=builder /app/site ./site

# container will expect you to bind-mount your local nginx docroot into /deploy
VOLUME ["/deploy"]

COPY --chmod=+x << 'EOF' /usr/local/bin/deploy.sh
#!/bin/sh
set -e

SRC="/app/site/"
DST="/deploy/"

echo "Deploying site from $SRC to $DST …"

# simple sync, deletes stale files on DEST
rsync -av --delete "$SRC" "$DST"

echo "✅ Deployment complete."
EOF

ENTRYPOINT ["/usr/local/bin/deploy.sh"]
CMD [""]  # no-op; all logic in entrypoint