data retention greater than 15 days?

[MasterCATZ]

--storage.tsdb.retention.size for at least 1TB
--storage.tsdb.retention.time

services:

prometheus:
image: prom/prometheus:latest
user: "1000"
volumes:
- ./prometheus/:/etc/prometheus/
- ./prometheus_data:/prometheus
command:
- '--config.file=/etc/prometheus/prometheus.yml'
- '--storage.tsdb.retention.size=1TB'
- '--storage.tsdb.path=/prometheus'
- '--web.console.libraries=/usr/share/prometheus/console_libraries'
- '--web.console.templates=/usr/share/prometheus/consoles'
ports:
- 9090:9090
networks:
- back-tier
restart: always