chore: import upstream snapshot with attribution

docker/core/Dockerfile

@@ -0,0 +1,53 @@
+# Multi-stage Dockerfile for Memvid Core (Rust Library)
+# Build stage
+FROM rust:1.92-slim-trixie AS builder
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    pkg-config \
+    libssl-dev \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Copy dependency files first for better caching
+COPY Cargo.toml Cargo.lock ./
+COPY rust-toolchain.toml ./
+
+# Create a dummy src/lib.rs to build dependencies
+RUN mkdir -p src && \
+    echo "// Dummy file for dependency building" > src/lib.rs && \
+    cargo build --release --features lex,pdf_extract && \
+    rm -rf src
+
+# Copy source code
+COPY src ./src
+COPY examples ./examples
+COPY tests ./tests
+
+# Build the library with default features
+RUN cargo build --release --features lex,pdf_extract
+
+# Runtime stage - minimal image for running examples/tests
+FROM debian:trixie-slim AS runtime
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    libssl3 \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Copy the built artifacts from builder
+COPY --from=builder /app/target/release/examples ./examples
+COPY --from=builder /app/target/release/deps ./deps
+COPY --from=builder /app/target/release/libmemvid_core*.rlib ./lib/
+
+# Set environment variables
+ENV RUST_LOG=info
+ENV PATH="/app/examples:${PATH}"
+
+# Default command
+CMD ["/bin/bash"]