Add Dockerfile

Dockerfile

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+# Generated by https://smithery.ai. See: https://smithery.ai/docs/config#dockerfile
+# Use a Node.js image for the build
+FROM node:20-alpine AS builder
+
+# Install yt-dlp
+RUN apk add --no-cache yt-dlp
+
+# Set the working directory
+WORKDIR /app
+
+# Copy necessary files
+COPY package.json tsconfig.json /app/
+COPY src /app/src
+
+# Install dependencies
+RUN --mount=type=cache,target=/root/.npm \
+    npm install --ignore-scripts
+
+# Build the TypeScript files
+RUN npm run prepare
+
+# Create a new image for the runtime
+FROM node:20-alpine AS runtime
+
+# Copy yt-dlp from the builder
+COPY --from=builder /usr/bin/yt-dlp /usr/bin/yt-dlp
+
+# Set the working directory
+WORKDIR /app
+
+# Copy the built files and node modules from the builder
+COPY --from=builder /app/lib /app/lib
+COPY --from=builder /app/node_modules /app/node_modules
+
+# Set the command to run the MCP server
+ENTRYPOINT ["node", "lib/index.mjs"]