ArgoCD Autosync based off of Docker Image `latest` Tag
This isn't really an ArgoCD thing. Keel is a good tool to help keep your images updated across the cluster and is super easy to implement. Basically, you'd just add some annotations to your manifest.
metadata:
  annotations:
    keel.sh/policy: force
    keel.sh/trigger: poll      
    keel.sh/pollSchedule: &quot;@every 10m&quot;

It may be worth noting that if you are moving to run this in production, avoid the use of the latest tag. This is considered bad practice as it can burn you when breaking changes are pushed. Keel can handle that through an innate understanding of semver tags allowing you to update on minor version changes, but avoid major without testing, etc.