Add Dockerfile and update README (#32)

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install uv for package management
+RUN pip install --no-cache-dir uv
+
+# Install the mcp-server-qdrant package
+RUN uv pip install --system --no-cache-dir mcp-server-qdrant
+
+# Expose the default port for SSE transport
+EXPOSE 8000
+
+# Set environment variables with defaults that can be overridden at runtime
+ENV QDRANT_URL=""
+ENV QDRANT_API_KEY=""
+ENV COLLECTION_NAME="default-collection"
+ENV EMBEDDING_MODEL="sentence-transformers/all-MiniLM-L6-v2"
+
+# Run the server with SSE transport
+CMD uvx mcp-server-qdrant --transport sse