# Dockerfile for the Node.js checkpoint service
FROM node:18-alpine

# Set working directory
WORKDIR /app

# Copy package files, config script
COPY package.json package-lock.json esbuild.config.js ./
# Copy application source before build so esbuild can locate entry files
COPY . .
# Install all dependencies, create dist folder, build with esbuild, then remove devDeps
RUN npm ci && mkdir -p dist && npm run build && npm prune --production

# Expose the application port
EXPOSE 3000

# Set NODE_ENV to production
ENV NODE_ENV=production

# Run the application
CMD ["npm", "run", "daemon"]