Add Dockerfile and docker-compose.yml for containerized setup; create .dockerignore (#6)

Dockerfile

@@ -0,0 +1,61 @@
+FROM debian:bookworm-slim AS builder
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    apt-utils \
+    gcc \
+    make \
+    libssl-dev \
+    libmagic-dev \
+    libnghttp2-dev \
+    pkg-config \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+
+WORKDIR /build
+
+COPY src/ ./src/
+COPY Makefile .
+COPY server.conf .
+
+RUN make clean && make release
+
+FROM debian:bookworm-slim
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    apt-utils \
+    libssl3 \
+    libmagic1 \
+    libnghttp2-14 \
+    ca-certificates \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+
+RUN useradd -m -u 1000 -s /bin/bash carbon
+
+WORKDIR /app
+RUN mkdir -p /app/www /app/log /app/ssl/cert && \
+    chown -R carbon:carbon /app
+
+COPY --from=builder /build/server /app/
+COPY --from=builder /build/server.conf /app/
+
+COPY www/ ./www/
+
+COPY README.md DOCUMENTATION.md LICENSE ./
+
+RUN chown -R carbon:carbon /app
+
+USER carbon
+
+EXPOSE 8080 8443
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8080/ || exit 1
+
+CMD ["./server"]