refactor mariadb

mariadb/docker-mariadb-prometheus/Dockerfile

@@ -0,0 +1,15 @@
+# vim:set ft=dockerfile:
+FROM debian:buster-slim
+
+RUN set -ex; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		prometheus-mysqld-exporter; \
+	apt-get clean -y; \	
+	rm -rf /var/lib/apt/lists/*; 
+
+RUN set -ex; \
+	echo '[client]\nhost=localhost\nuser=prometheus\npassword=prom01\n' >/etc/prometheus-mysql-exporter
+
+EXPOSE 9104
+CMD ["prometheus-mysql-exporter",  "--config.my-cnf", "/etc/prometheus-mysql-exporter"]