Copy .fetchmailrc from /config/ in entrypoint wrapper

docker-entrypoint.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# verify maildir
+if [ -d /var/mail/working ]; then
+	echo "/var/mail/working exists"
+else
+	maildirmake /var/mail/working
+	echo "to /var/mail/working" > /root/.mailfilter
+fi
+
+# check for user config fetchmailrc
+if [ -f /config/.fetchmailrc ]; then
+	cp /config/.fetchmailrc /root/.fetchmailrc
+	chmod 0700 /root/.fetchmailrc
+	echo "Installed .fetchmailrc"
+fi
+
+if [ "$1" = 'cron' ] || [ "$1" = '/opt/save-attachments.sh' ]; then
+	if [ ! -f /root/.fetchmailrc ]; then
+		echo "Cannot start container without .fetchmailrc"
+		exit 1
+	fi
+fi
+
+exec "$@"