add grafana labels

config/prometheus/Dockerfile

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+ARG BUILDER_IMAGE=index.docker.io/library/ubuntu@sha256:82becede498899ec668628e7cb0ad87b6e1c371cb8a1e597d83a47fac21d6af3
+ARG RUNTIME_IMAGE=gcr.io/distroless/base@sha256:97f9cbf81590c7dd878d7e10c20116fa7488c2fb91b3c839df1ebdcb61ab13ca
+
+
+FROM $BUILDER_IMAGE AS builder
+
+	ARG VERSION=2.28.1
+	ARG SHA256=91dd91e13f30fe520e01175ca1027dd09a458d4421a584ba557ba88b38803f27
+
+	RUN set -ex && \
+		apt update && \
+		apt install -y curl gzip
+
+	RUN set -ex && \
+		curl -SOL https://github.com/prometheus/prometheus/releases/download/v${VERSION}/prometheus-${VERSION}.linux-amd64.tar.gz && \
+		echo "${SHA256} prometheus-${VERSION}.linux-amd64.tar.gz" | sha256sum -c && \
+		tar xvzf prometheus-${VERSION}.linux-amd64.tar.gz --strip-components=1 && \
+		mv ./prometheus /usr/local/bin/prometheus
+
+	RUN mkdir /data
+
+
+FROM $RUNTIME_IMAGE
+
+	COPY --from=builder --chown=nonroot:nonroot /data 		      /data
+	COPY --from=builder --chown=nonroot:nonroot /usr/local/bin/prometheus /usr/local/bin/prometheus
+	USER nonroot:nonroot
+
+	ENTRYPOINT [ "prometheus" ]

config/prometheus/config.yaml

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+global:
+  scrape_interval: '15s'
+  evaluation_interval: '15s'
+scrape_configs:
+  - job_name: 'monerod'
+    static_configs:
+      - targets:
+          - 'monerod:9000'