# Use an official Node.js runtime as a parent image for building
FROM node:lts-alpine AS builder
# Set the working directory in the container
WORKDIR /app
# Copy package.json and package-lock.json to the working directory
COPY package.json ./
COPY package-lock.json ./
# Install development and production dependencies
RUN --mount=type=cache,target=/root/.npm npm install
# Copy source code and TypeScript configuration
COPY src /app/src
COPY tsconfig.json /app/tsconfig.json
# Build the TypeScript project
RUN npm run build
# Use a minimal Node.js runtime as the base for the release image
FROM node:lts-alpine AS release
# Set environment to production
ENV NODE_ENV=production
# Set the working directory
WORKDIR /app
# Copy only the built application (from /app/build) and production dependencies from the builder stage
COPY --from=builder /app/build /app/build
COPY --from=builder /app/package.json /app/package.json
COPY --from=builder /app/package-lock.json /app/package-lock.json
# Install only production dependencies (based on package-lock.json)
# This keeps the final image small and secure by omitting development dependencies
RUN npm ci --ignore-scripts --omit-dev
# Expose the ports the app runs on (3000 for standard, 8087 for SSE, 8088 for HTTP Stream)
EXPOSE 3000
EXPOSE 8087
EXPOSE 8088
# Run the application
ENTRYPOINT ["node", "build/index.js"]
