有什么方法可以使用docker run --group-add为组指定组名和ID吗？ [英] Is there any way to specify the group name AND id for a group with docker run --group-add?
问题描述
当前我在脚本中有以下内容：
Currently I have something like the following in a script:
DOCKER_GROUP_ID=$(cut -d: -f3 < <(getent group docker))
...
docker run --group-add ${DOCKER_GROUP_ID} ...
问题是当我运行此脚本时，始终在结果容器中收到如下消息：
Problem is when I run this script, I get messages like the following in the resultant container all the time:
groups: cannot find name for group ID 999
解决方案：
基于@TarunLalwani的回答，我的脚本中包含以下内容：
Based on the answer from @TarunLalwani I have the following in my script:
DOCKER_GROUP_ID=$(cut -d: -f3 < <(getent group docker))
CMD="docker run -d \
--group-add ${DOCKER_GROUP_ID} \
${IDEA_IMAGE}"
echo $CMD
CONTAINER=$($CMD)
# Post-configuration
docker exec --user=root -it $CONTAINER groupadd -g $DOCKER_GROUP_ID docker
docker attach $CONTAINER
推荐答案
这是预期的行为，因为组ID仅插入容器内而不插入其名称。因此，您可以运行id命令来查看仅不通过组ID传递组名
That is expected behavior because the group id is only inserted inside the container and not its name. So you can run the id command see that the group names are not passed only the group id
唯一的方法是运行命令 groupadd -g 999 docker 。这也将其添加到组文件中。但是您必须执行它，而docker不会帮您完成
The only way around would be to run the command groupadd -g 999 docker. This will add it to the group file also. But you have to execute it and docker won't do it for you
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