Feature: Add Dockerfile with multi-stage Node.js build

Dockerfile

@@ -0,0 +1,36 @@
+# Use official lightweight Node.js image
+FROM node:18-slim AS build
+
+# Set working directory
+WORKDIR /app
+
+# Copy package.json and package-lock.json
+COPY package.json package-lock.json ./
+
+# Install dependencies (including devDependencies for build), but ignore lifecycle scripts to avoid postinstall error
+RUN npm ci --ignore-scripts
+
+# Copy the rest of the project files
+COPY . .
+
+# Build the TypeScript code
+RUN npm run build
+
+# --- Production image ---
+FROM node:18-slim AS prod
+WORKDIR /app
+
+# Copy only the necessary files from build stage
+COPY --from=build /app/package.json ./
+COPY --from=build /app/package-lock.json ./
+COPY --from=build /app/dist ./dist
+
+# Install only production dependencies, but ignore lifecycle scripts to avoid husky/prepare errors
+RUN npm ci --omit=dev --ignore-scripts
+
+# Set binary path for CLI
+ENV PATH="/app/dist:$PATH"
+
+# Set entrypoint to the CLI tool
+ENTRYPOINT ["node", "dist/index.js"]
+CMD ["--help"]