ARG NODE_VERSION=22-alpine
FROM node:${NODE_VERSION}
WORKDIR /app

# Install only production deps using the lockfile so builds are deterministic.
COPY package.json package-lock.json* ./
RUN npm ci --omit=dev

# Source. (public/ is served by express.static, so it must be in the image.)
COPY index.js mailer.js push.js db.js agenda.js ./
COPY db ./db
COPY public ./public

EXPOSE 3002
# Apply the schema (idempotent) then start the server. Same pattern as LabWise.
CMD ["sh", "-c", "node db/migrate.js && node index.js"]