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Update attempts when image is already up to date when no container exist #829

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@jimgus

Description

@jimgus

Describe the bug
I have seen this issue for deployments that are scaled down to 0 replica by Keda and for CronJobs when no Job is running in combination with force-update=true. The image update part works when there is a new image available but it continuously tries to update it over and over again even though it is already up to date. I have not seen this issue with other applications with the same config that don't scale down to 0 so I believe this happens that there is no container up and running and force-update=true.

To Reproduce
Use a CronJob and set force-update=true

Expected behavior
The image update attempts shall only happen when the image is not up to date.

Additional context
We are using Helm to deploy deployments and CronJobs

Version
0.14.0

Logs
Update attempt when image already is up to date:

2024-08-13 11:26:30.325	
body=time="2024-08-13T09:26:30Z" level=info msg="Processing results: applications=10 images_considered=10 images_skipped=0 images_updated=1 errors=0"
2024-08-13 11:26:30.319	
body=time="2024-08-13T09:26:30Z" level=info msg="Successfully updated the live application spec" application=xxx-report
2024-08-13 11:26:30.268	
body=time="2024-08-13T09:26:30Z" level=info msg=Trace args="[git clean -ffdx]" dir=/tmp/git-xxx-report1109256959 operation_name="exec git" time_ms=13.148676
2024-08-13 11:26:30.255	
body=time="2024-08-13T09:26:30Z" level=info msg="git clean -ffdx" dir=/tmp/git-xxx-report1109256959 execID=da92d
2024-08-13 11:26:30.255	
body=time="2024-08-13T09:26:30Z" level=info msg=Trace args="[git checkout --force master]" dir=/tmp/git-xxx-report1109256959 operation_name="exec git" time_ms=213.936409
2024-08-13 11:26:30.040	
body=time="2024-08-13T09:26:30Z" level=info msg="git checkout --force master" dir=/tmp/git-xxx-report1109256959 execID=0292b
2024-08-13 11:26:30.040	
body=time="2024-08-13T09:26:30Z" level=info msg=Trace args="[git config user.email noreply@argoproj.io]" dir=/tmp/git-xxx-report1109256959 operation_name="exec git" time_ms=1.514835
2024-08-13 11:26:30.039	
body=time="2024-08-13T09:26:30Z" level=info msg="git config user.email noreply@argoproj.io" dir=/tmp/git-xxx-report1109256959 execID=d0dc8
2024-08-13 11:26:30.039	
body=time="2024-08-13T09:26:30Z" level=info msg=Trace args="[git config user.name argocd-image-updater]" dir=/tmp/git-xxx-report1109256959 operation_name="exec git" time_ms=1.5754059999999999
2024-08-13 11:26:30.037	
body=time="2024-08-13T09:26:30Z" level=info msg="git config user.name argocd-image-updater" dir=/tmp/git-xxx-report1109256959 execID=c8200
2024-08-13 11:26:30.037	
body=time="2024-08-13T09:26:30Z" level=info msg=Trace args="[git fetch origin --tags --force --prune]" dir=/tmp/git-xxx-report1109256959 operation_name="exec git" time_ms=8646.557649
2024-08-13 11:26:21.391	
body=time="2024-08-13T09:26:21Z" level=info msg="git fetch origin --tags --force --prune" dir=/tmp/git-xxx-report1109256959 execID=55f76
2024-08-13 11:26:21.390	
body=time="2024-08-13T09:26:21Z" level=warning msg="temporarily disabling strict host key checking (i.e. '-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'), please don't use in production"
2024-08-13 11:26:21.390	
body=time="2024-08-13T09:26:21Z" level=info msg="Initializing git@github.com:annotell/annotell-cd.git to /tmp/git-xxx-report1109256959"
2024-08-13 11:26:21.385	
body=time="2024-08-13T09:26:21Z" level=info msg="Committing 1 parameter update(s) for application xxx-report" application=xxx-report
2024-08-13 11:26:21.385	
body=time="2024-08-13T09:26:21Z" level=info msg="Successfully updated image 'eu.gcr.io/repo/zzz-cronjobs' to 'eu.gcr.io/repo/zzz-cronjobs:master.20240807T0752.867e52aac7a88db533c4daaa7b58795b0dd14d6e', but pending spec update (dry run=false)" alias=yyy-zzz-cronjobs application=xxx-report image_name=repo/zzz-cronjobs image_tag= registry=eu.gcr.io
2024-08-13 11:26:21.385	
body=time="2024-08-13T09:26:21Z" level=info msg="Setting new image to eu.gcr.io/repo/zzz-cronjobs:master.20240807T0752.867e52aac7a88db533c4daaa7b58795b0dd14d6e" alias=yyy-zzz-cronjobs application=xxx-report image_name=repo/zzz-cronjobs image_tag= registry=eu.gcr.io
2024-08-13 11:26:21.269	
body=time="2024-08-13T09:26:21Z" level=info msg="Starting image update cycle, considering 10 annotated application(s) for update"

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