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Start docker container with additional parameters

Usually, when I use existing docker images from docker-hub or even my own, there are plenty of options I would like to provide on start of a new container. Currently plesk does not support that. From the commandline a docker-container can be instantiated with several image-specific parameters. I would like to be able to do that from plesk , too.

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Fabian Busch shared this idea  ·   ·  Report…  ·  Admin →
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open discussion  ·  IgorG responded  · 

Thank you for your input. We will consider this functionality in upcoming releases if it is popular. Everyone, please continue voting for this feature if you consider it important.
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  • Paluke commented  ·   ·  Report

    The thing I'm struggling with the most, is that all docker containers run under Root.
    If I run a container for a certain domain, I want it to run under that user.

    Without the option of adding it to the docker run argument I have to add it to the dockerfile.

    I then cannot upload my freshly crafted image in the plesk UI (which is a bug on it's own) and have to do it through SSH.

    I have to do this a lot, because I don't want any public container running with root on my server. This is not secure.

    tl;dr

    Please add at least an option to specify a userId and usergroup:

    Taken from the documentation:

    USER

    root (id = 0) is the default user within a container. The image developer can create additional users. Those users are accessible by name. When passing a numeric ID, the user does not have to exist in the container.

    The developer can set a default user to run the first process with the Dockerfile USER instruction. When starting a container, the operator can override the USER instruction by passing the -u option.

    -u="", --user="": Sets the username or UID used and optionally the groupname or GID for the specified command.

    The followings examples are all valid:
    --user=[ user | user:group | uid | uid:gid | user:gid | uid:group ]

    https://docs.docker.com/engine/reference/run/

    So if there would be a input field for user / group (or dare I say a dropdown with the available users?) That would be really a good thing to have for security.

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