Backup docker postgresql data with crontab

# m h  dom mon dow   command
# SQL Backup (daily)
15  1   *   *   *    docker exec -t iixnotes_database_1 pg_dumpall -U postgres | gzip > /media/stor/backup/iix-notes.daily.psql.gz

# SQL Backup (weekly)
15  1   *   *   0    docker exec -t iixnotes_database_1 pg_dumpall -U postgres | gzip > /media/stor/backup/iix-notes.weekly.psql.gz

# SQL Backup (monthly)
15  1   1   *   *    docker exec -t iixnotes_database_1 pg_dumpall -U postgres | gzip > /media/stor/backup/iix-notes.monthly.psql.gz