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Document EXEC_LABEL behavior in conjunction with conf.d
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@ -46,6 +46,10 @@ If you have more than one `docker-volume-backup` container (possibly across seve
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multiple backup schedules, you will need to use `EXEC_LABEL` in the configuration and a `docker-volume-backup.exec-label` label on each
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container using custom commands to ensure that the commands are only run by the correct `docker-volume-backup` instance.
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{: .important }
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In case you use `EXEC_LABEL` together with configuration mounted from `conf.d` it's important to understand that a distinct `EXEC_LABEL` __should be set in each configuration__.
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Else, schedules that do not specify an `EXEC_LABEL` will still trigger commands on all containers with such labels, no matter whether they specify `docker-volume-backup.exec-label` or not.
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```yml
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version: '3'
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@ -88,7 +88,7 @@ docker run --rm \
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Alternatively, pass a `--env-file` in order to use a full config as described below.
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### Available image registries
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## Available image registries
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This Docker image is published to both Docker Hub and the GitHub container registry.
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Depending on your preferences and needs, you can reference both `offen/docker-volume-backup` as well as `ghcr.io/offen/docker-volume-backup`:
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@ -100,7 +100,7 @@ docker pull ghcr.io/offen/docker-volume-backup:v2
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Documentation references Docker Hub, but all examples will work using ghcr.io just as well.
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### Supported Engines
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## Supported Engines
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This tool is developed and tested against the Docker CE engine exclusively.
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While it may work against different implementations (e.g. Balena Engine), there are no guarantees about support for non-Docker engines.
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