FROM node:18-slim

WORKDIR /usr/src/app

# Install dependencies from package.json (no package-lock.json, npm install will install latest compatible)
COPY package.json ./
RUN npm install

# Copy the rest of the source code
COPY . .

# Optional build step if a build script exists; ignore errors to keep image usable for a library
RUN npm run build || true

# Note: No default CMD to keep this as a library image; consumers should provide their own command.