Hello Dan Kanivas,Welcome to microsoft Q&A, Thankyou for posting your query here.
ImagePullFailure error you're encountering in your Azure Container App, indicates that the system is unable to pull the Docker image from your Azure Container Registry (ACR).
Check if your Azure Container Registry (ACR) is working properly. You can look this up online in your Azure account or use a special command tool called Azure CLI.
Make sure the image name and tag specified in your Container App deployment configuration exactly match those in your ACR.
check the managed identity assigned to your Container App or the service principal's access rights, to ensure the Container App has the right credentials to pull images from your ACR.
If your ACR is behind a network restriction or you have IP whitelisting enabled, ensure that your Container App's outbound connections are allowed. This might involve configuring VNet integration or updating your network rules to allow access.
Some SKUs of ACR like Basic have limitations on webhooks and advanced features. If your usage patterns have changed, consider if upgrading your ACR SKU might be necessary.
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