contraint instead of label to create Registry on node1 (#4644)
As the `--label` option is used before in `docker node update --label-add registry=true node1`, the Docker registry should be restricted to only run on `node1` - and nowhere else. So the `docker service create` command has to use the option `--constraint 'node.labels.registry==true` instead of `--label registry=true`- because it is a contraint, where to run the Registry - we don´t just want to set a label again.pull/3397/head
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@ -318,7 +318,7 @@ $ docker service create \
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--name registry \
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--secret domain.crt \
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--secret domain.key \
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--label registry=true \
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--constraint 'node.labels.registry==true' \
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--mount src=/mnt/registry,dst=/var/lib/registry \
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-e REGISTRY_HTTP_ADDR=0.0.0.0:80 \
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-e REGISTRY_HTTP_TLS_CERTIFICATE=/run/secrets/domain.crt \
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