Retention period not being honoured

[aryan-nvd]

Bug Description

With the following docker-compose configuration
services:
prometheus:
image: ubuntu/prometheus
container_name: prometheus
restart: unless-stopped
volumes:
# - ~/data/prometheus/promo-config:/etc/prometheus
- ./prometheus-config:/etc/prometheus
- ./rules.yml:/etc/prometheus/rules.yml
- ~/data/prometheus/data:/prometheus
networks:
- localprom
ports:
- 9090:9090
command:
- "/bin/prometheus"
- "--config.file=/etc/prometheus/prometheus.yml"
- "--storage.tsdb.path=/prometheus"
- "--storage.tsdb.retention.time=60d" # Retention period of 60 days
user: "1000:1000"

the retention value of 60d is never retained, and the prometheus instance always restarts at 15d

I have tried many things including the wonderful ChaGPT/Gemini and no avail.

except it state that I should be using the prom/prometheus, and that this image might not honour the variable (which I doubt)

To Reproduce

docker compose start -d

view prometheus status screen

always has Storage retention 15d

Environment

EC2 running AWS Linux
with
Docker version 25.0.8, build 0bab007

Relevant log output

Storage retention	15d

Additional context

No response

[lucabello]

Related: #109