added Docker support

Author: m1k1o

Dockerfile

@@ -0,0 +1,12 @@
+FROM alpine:3.12
+
+WORKDIR /usr/src
+
+RUN apk update; \
+    apk add --no-cache python3 py3-pip smartmontools; \
+    python3 -m pip install prometheus_client;
+
+ADD smartprom.py .
+
+EXPOSE 9902
+ENTRYPOINT "./smartprom.py"

docker-compose.yml

@@ -0,0 +1,8 @@
+version: '3'
+services:
+  smartctl-metrics:
+    build: ./
+    restart: unless-stopped
+    privileged: true
+    ports:
+      - 9902:9902