Initial commit: Beszel fork with Domain Locker integration

internal/dockerfile_agent_nvidia

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+FROM --platform=$BUILDPLATFORM golang:bookworm AS builder
+
+WORKDIR /app
+
+COPY ../go.mod ../go.sum ./
+RUN go mod download
+
+# Copy source files
+COPY . ./
+
+# Build
+ARG TARGETOS TARGETARCH
+RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -tags glibc -ldflags "-w -s" -o /agent ./internal/cmd/agent
+
+# --------------------------
+# Smartmontools builder stage
+# --------------------------
+FROM nvidia/cuda:12.2.2-base-ubuntu22.04 AS smartmontools-builder
+
+RUN apt-get update && apt-get install -y \
+  wget \
+  build-essential \
+  && wget https://downloads.sourceforge.net/project/smartmontools/smartmontools/7.5/smartmontools-7.5.tar.gz \
+  && tar zxvf smartmontools-7.5.tar.gz \
+  && cd smartmontools-7.5 \
+  && ./configure --prefix=/usr --sysconfdir=/etc \
+  && make \
+  && make install \
+  && rm -rf /smartmontools-7.5* \
+  && apt-get remove -y wget build-essential \
+  && apt-get autoremove -y \
+  && rm -rf /var/lib/apt/lists/*
+
+# --------------------------
+# Final image: GPU-enabled agent with nvidia-smi
+# --------------------------
+FROM nvidia/cuda:12.2.2-base-ubuntu22.04
+COPY --from=builder /agent /agent
+
+# AMD GPU name lookup (used by agent on hybrid laptops when /usr/share/libdrm/amdgpu.ids is read)
+COPY --from=builder /app/agent/test-data/amdgpu.ids /usr/share/libdrm/amdgpu.ids
+
+# Copy smartmontools binaries and config files
+COPY --from=smartmontools-builder /usr/sbin/smartctl /usr/sbin/smartctl
+
+# Ensure data persistence across container recreations
+VOLUME ["/var/lib/beszel-agent"]
+
+ENTRYPOINT ["/agent"]