Replace alpine atd with crond

build/Dockerfile.alpine

@@ -28,7 +28,7 @@ RUN printf '%s\n' "https://dl-cdn.alpinelinux.org/alpine/${apkrepo:-latest-stabl
     && apk update \
     && apk upgrade \
     && apk add --no-cache \
-        bash bash-completion ncurses at rsync grep coreutils \
+        bash bash-completion ncurses rsync grep coreutils \
         nginx \
         mariadb mariadb-client mariadb-server-utils \
         ca-certificates acl \

build/run/docker-entrypoint/init.d/50-cron.sh

@@ -1,28 +1,38 @@
 #!/usr/bin/env bash
+# Crond
+if [ ! -d /etc/periodic/ ]
+then
+	echo "Cron not detected, exiting..."
+	exit 1
+fi
+ln -s /usr/share/webapps/roundcube/bin/cleandb.sh /etc/periodic/daily/roundcube-cleandb
+ln -s /usr/local/bin/postwhite/postwhite /etc/periodic/daily/postwhite
+ln -s /usr/local/bin/postwhite/scrape_yahoo /etc/periodic/weekly/postwhite_scrape_yahoo
+crond -b -l 0 -L /var/log/mail/cron.log
 
-# Start at daemon
-atd
-
-# Roundcube cleanup (daily)
-while true
-do
-	at -f /usr/share/webapps/roundcube/bin/cleandb.sh midnight
-	sleep 1d
-done &
-
-# Update Postscreen Whitelists (daily)
-while true
-do
-	at -f /usr/local/bin/postwhite/postwhite midnight
-	sleep 1d
-done &
-
-# Update Yahoo! IPs for Postscreen Whitelists (weekly)
-while true
-do
-	at -f /usr/local/bin/postwhite/scrape_yahoo midnight sunday
-	sleep 7d
-done &
+# # Start at daemon
+# atd
+#
+# # Roundcube cleanup (daily)
+# while true
+# do
+# 	at -f /usr/share/webapps/roundcube/bin/cleandb.sh midnight
+# 	sleep 1d
+# done &
+#
+# # Update Postscreen Whitelists (daily)
+# while true
+# do
+# 	at -f /usr/local/bin/postwhite/postwhite midnight
+# 	sleep 1d
+# done &
+#
+# # Update Yahoo! IPs for Postscreen Whitelists (weekly)
+# while true
+# do
+# 	at -f /usr/local/bin/postwhite/scrape_yahoo midnight sunday
+# 	sleep 7d
+# done &
 
 # # Refresh ssl keys daily
 # # https://www.golinuxcloud.com/renew-self-signed-certificate-openssl/