Use crontab utility to install new crontabs (#23)

Author: rahearn

10/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

11/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

12/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

13/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

14/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

15/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

16/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"

Makefile

@@ -1,2 +1,2 @@
 update:
-	python update.py
+	python3 update.py

template/entrypoint.sh

@@ -7,6 +7,6 @@ if [[ $@ == *crond* ]] && [ -z "$CRON_SCHEDULE" ]; then
 fi
 
 # Write cron schedule
-echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" > /var/spool/cron/crontabs/root
+echo "$CRON_SCHEDULE python3 -u /backup/backup.py > /dev/stdout" | crontab -
 
 exec "$@"