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Dockerfile

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+FROM alpine:latest AS builder
+
+# Install build dependencies
+RUN apk add --no-cache \
+    build-base \
+    cmake \
+    git \
+    musl-dev \
+    nlohmann-json-dev
+
+# Copy source code
+COPY . /src
+WORKDIR /src
+
+# Build
+RUN mkdir build && cd build && \
+    cmake .. && \
+    make -j$(nproc)
+
+# Create final image
+FROM alpine:latest
+
+# Install runtime dependencies
+RUN apk add --no-cache \
+    libstdc++
+
+# Copy binary from builder
+COPY --from=builder /src/build/dropshell_template_registry /usr/local/bin/
+
+# Create data directory
+RUN mkdir -p /data
+VOLUME /data
+
+# Set working directory
+WORKDIR /data
+
+# Expose port
+EXPOSE 80
+
+# Run server
+CMD ["dropshell_template_registry", "/data/config.json"]