[Add] node_exporter container

docker/node_exporter/Dockerfile

@@ -0,0 +1,15 @@
+FROM openeuler/openeuler:24.03
+
+RUN dnf update -y && \
+    dnf clean all && \
+    rm -rf /var/cache/dnf/*
+
+RUN curl -fsSL https://github.com/prometheus/node_exporter/releases/download/v1.8.2/node_exporter-1.8.2.linux-amd64.tar.gz | tar -xz -C /usr/local/bin && \
+    mv /usr/local/bin/node_exporter-*/node_exporter /usr/local/bin/node_exporter && \
+    rm /usr/local/bin/node_exporter-* -rf && \
+    chmod +x /usr/local/bin/node_exporter
+
+RUN mkdir /etc/prometheus/ && \
+    touch /etc/prometheus/prometheus.yml
+
+CMD ["node_exporter"]