philippschmalen/acr-daily-purge.md

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Azure Container Registry - Daily purge storage optimization

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acr-daily-purge.md

Azure Container Registry - Daily purge storage optimization

Reduce storage and costs by removing docker images that are not needed anymore.

Prerequisites

az cli installed
successfully authenticated

Example

Purge all images except for stage and master daily at midnight.

#!/bin/bash

set -euo pipefail
  

REGISTRY=<registry-name>

# filter images by tags that can be removed
# example: remove all images except for `stage` and `master`
PURGE_CMD="acr purge --filter '.*:^(?!^stage\$|^master\$).*\$' --untagged --ago 0d"

az acr task create \
  --name "daily-purge" \
  --registry "$REGISTRY" \
  --cmd "$PURGE_CMD" \
  --schedule "0 0 * * *" \
  --context /dev/null

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