docker - How to check if an externally linked container is connected -

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using docker-compose, can add externally linked container so:

foo/dockerfile

services:   has-external-link:     networks:       - default       - other_default     external_links:       - other-service  networks:   other_default:     external: true

which should connect image service other-service defined in other/dockerfile.

docker compose doesn't seem care if other-service or not when starting has-external-link. there way verify containers indeed linked expected?*

*...that doesn't require executing in other-service, in modern age of docker not have curl or installed


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