add back dockerfile

Author: Kylejeong2

Dockerfile

@@ -0,0 +1,33 @@
+# ----- Build Stage -----
+FROM node:lts-alpine AS builder
+WORKDIR /app
+
+# Copy package files first for dependency caching
+COPY package.json pnpm-lock.yaml ./
+RUN corepack enable && pnpm install --frozen-lockfile
+
+# Copy configuration and source code
+COPY tsconfig.json ./
+COPY src ./src
+COPY config.d.ts index.d.ts ./
+
+# Build the application
+RUN pnpm build
+
+# ----- Production Stage -----
+FROM node:lts-alpine
+WORKDIR /app
+
+# Copy package files and install production dependencies
+COPY package.json pnpm-lock.yaml ./
+RUN corepack enable && pnpm install --prod --frozen-lockfile --ignore-scripts
+
+# Copy built artifacts and required files
+COPY --from=builder /app/dist ./dist
+COPY index.js config.d.ts index.d.ts cli.js ./
+
+# Expose HTTP port
+EXPOSE 8080
+
+# Default command using CLI flags
+CMD ["node", "cli.js", "--port", "8080"]