chore: add distroless docker image (prometheus#3592)

Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>

Author: roidelapluie

Dockerfile.distroless

@@ -0,0 +1,24 @@
+ARG DISTROLESS_ARCH="amd64"
+
+# Use DISTROLESS_ARCH for base image selection (handles armv7->arm mapping).
+FROM gcr.io/distroless/static-debian13:nonroot-${DISTROLESS_ARCH}
+# Base image sets USER to 65532:65532 (nonroot user).
+
+ARG ARCH="amd64"
+ARG OS="linux"
+
+LABEL org.opencontainers.image.authors="The Prometheus Authors"
+LABEL org.opencontainers.image.vendor="Prometheus"
+LABEL org.opencontainers.image.title="node_exporter"
+LABEL org.opencontainers.image.description="Prometheus exporter for hardware and OS metrics exposed by *NIX kernels"
+LABEL org.opencontainers.image.source="https://github.com/prometheus/node_exporter"
+LABEL org.opencontainers.image.url="https://github.com/prometheus/node_exporter"
+LABEL org.opencontainers.image.documentation="https://github.com/prometheus/node_exporter"
+LABEL org.opencontainers.image.licenses="Apache License 2.0"
+LABEL io.prometheus.image.variant="distroless"
+
+COPY LICENSE NOTICE /
+COPY .build/${OS}-${ARCH}/node_exporter /bin/node_exporter
+
+EXPOSE      9100
+ENTRYPOINT  [ "/bin/node_exporter" ]