• How docker generates container's names

    2 min read

    docker names

    Everytime you create a container using docker, if not already set using --name, docker chooses a name for you: you can expect two words with a underscore:

    $ docker run --rm -d alpine sleep 24h 38c4cc4e87762fc113ef174e9a4989e13d21037678abd3fe73840b825f14c7bf $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 38c4cc4e8776 alpine "sleep 24h" 5 seconds ago Up 3 seconds romantic_shtern

    For this example it was chosen romantic_shtern, but it can use a great variety of words:

    $ docker ps --all | grep -v "Up" | awk '{ print $NF }' NAMES mystifying_poitras suspicious_shtern focused_chatelet keen_mendel happy_jackson xenodochial_margulis kind_blackburn gallant_pascal trusting_thompson (...)

    So, how does Docker generate names for it's containers?

    01/08/2022

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