change to build in crond

submanager/Dockerfile

@@ -5,14 +5,10 @@ ENV TZ=Europe/London
 COPY . /submanager
 RUN pip install --no-cache-dir -r /submanager/requirements.txt
 
-RUN mkdir -p /sub /conf.d /submanager \
-    && apk --no-cache add dcron at \
-    && echo -e "python -u /submanager/update_nginx_config.py 2>&1" | at now + 1 minute \
-    && echo -e "python -u /submanager/remove_subscription.py 2>&1" | at now + 1 minute \
-    && echo -e "python -u /submanager/update_subscription.py 2>&1" | at now + 1 minute \
-    && echo -e "0 6,18 * * * python -u /submanager/update_subscription.py 2>&1\n" > /etc/crontabs/root
+RUN chmod 755 /submanager/entry.sh
+RUN /usr/bin/crontab /submanager/crontab.txt
 
 VOLUME /sub
 VOLUME /conf.d
 
-ENTRYPOINT /usr/sbin/crond -f
+CMD ["/submanager/entry.sh"]

submanager/crontab.txt

@@ -0,0 +1 @@
+* * * * * python -u /submanager/update_subscription.py

submanager/entry.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# start cron
+python -u /submanager/update_nginx_config.py
+python -u /submanager/remove_subscription.py
+python -u /submanager/update_subscription.py
+/usr/sbin/crond -f -l 8