Dockerfile

@@ -1,18 +1,13 @@
 # Snapraid 12.0
-FROM debian:bullseye
+FROM alpine:latest
 
-RUN apt-get update
-RUN apt-get install -y python3 git snapraid smartmontools tzdata cron
-RUN git clone https://github.com/Chronial/snapraid-runner.git /app/snapraid-runner
-RUN chmod +x /app/snapraid-runner/snapraid-runner.py
+RUN apk --update add python3 git smartmontools tzdata && \
+    apk add snapraid --update-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing --allow-untrusted && \
+    git clone https://github.com/Chronial/snapraid-runner.git /app/snapraid-runner && \
+    chmod +x /app/snapraid-runner/snapraid-runner.py && \
+    rm -rf /var/cache/apk/*
 
-RUN echo '0 3 * * * /usr/bin/python3 /app/snapraid-runner/snapraid-runner.py -c /config/snapraid-runner.conf' > /etc/cron.d/snapraid
-
-# Give execution rights on the cron job
-RUN chmod 0644 /etc/cron.d/snapraid
-
-# Apply cron job
-RUN crontab /etc/cron.d/snapraid
+RUN echo '0 3 * * * /usr/bin/python3 /app/snapraid-runner/snapraid-runner.py -c /config/snapraid-runner.conf' > /etc/crontabs/root
 
 VOLUME /mnt /config
 

docker-entry.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/ash
 # Ensures that configuration files for both SnapRAID and snapraid-runner are present
 # in /config. In reality, both files should be edited manually before running this
 # container to ensure correct operation.
@@ -18,10 +18,10 @@ if [ ! -f /config/snapraid-runner.conf ]; then
     exit 1
 fi
 
-# test if link is made between /etc/snapraid.conf and /config/snapraid.conf, make if not
+# test if link is made between /etc/snapraid.conf and /config/snapraid.conf, make if not
 if [ ! -L /etc/snapraid.conf ]; then
     ln -s /config/snapraid.conf /etc/snapraid.conf
 fi
 
-/usr/sbin/cron -f
+/usr/sbin/crond -d 6 -c /etc/crontabs -f