feat(docker): enable containerization of marketplace scraper

Introduce Dockerfile with production build using Bun, .dockerignore for efficient builds, and docker-compose.yml for easy local and prod deployment on port 3000.

Dockerfile

@@ -0,0 +1,32 @@
+# Use the official Bun base image
+FROM oven/bun:latest AS base
+
+# Set the working directory
+WORKDIR /app
+
+# Copy package files
+COPY package.json bun.lock* ./
+
+# Install dependencies
+RUN bun install --frozen-lockfile
+
+# Copy source code
+COPY src ./src
+COPY tsconfig.json ./
+
+# Build the application for production
+RUN bun build ./src/index.ts --outdir ./dist --minify
+
+# Multi-stage build - runtime stage
+FROM oven/bun:latest AS runtime
+
+WORKDIR /app
+
+# Copy the built application from the base stage
+COPY --from=base /app/dist/ ./
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Start the application
+CMD ["bun", "index.js"]