Docker --使用json格式化,多个占位符的特定占位符语法

wz3gfoph 于 2023-02-26 发布在 Docker

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我尝试使用docker ps和json format命令生成如下所示的输出

{"Names":"name"}

docker ps --format '{{json .Names}}'

输出不带标签的{"name"}。
docker ps --format '{{json .}}'提供了带有标签的所有容器信息，但我不需要所有信息。
最好基于下面的所有占位符名称，我希望有一个输出，如下图所示，其中的字段是按照我选择的顺序选择的：
x一个一个一个一个x一个一个二个x

JSON

来源：https://stackoverflow.com/questions/61528514/docker-format-with-json-specific-placeholder-syntax-for-multiple-placeholders

2条答案

按热度按时间

w9apscun1#

您可以使用以下格式执行此操作：

docker ps --format '{"ID":"{{ .ID }}", "Image": "{{ .Image }}", "Names":"{{ .Names }}"}'

它输出：

{"ID":"ed3c992b7472", "Image": "alpine:3.9", "Names":"wizardly_buck"}

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8yoxcaq72#

正如@mcuenez在评论中所说的那样，在我看来，他的建议比@Mickael B的建议更好，因为它更通用，而且你不必写一个很长的命令来获取所有数据。

docker ps --all --no-trunc --format='{{json .}}'

为了使输出共振，你可以使用jq。

docker ps --all --no-trunc --format="{{json . }}" | jq --tab .

输出将如下所示

{
        "Command": "zsh",
        "CreatedAt": "2023-02-22 23:40:37 +0100 CET",
        "ID": "b2163d5d7229",
        "Image": "local-image-with-zsh",
        "Labels": "org.opencontainers.image.ref.name=ubuntu,org.opencontainers.image.version=22.04",
        "LocalVolumes": "0",
        "Mounts": "",
        "Names": "nervous_einstein",
        "Networks": "bridge",
        "Ports": "",
        "RunningFor": "14 minutes ago",
        "Size": "215kB (virtual 1.22GB)",
        "State": "running",
        "Status": "Up 14 minutes"
}
{
        "Command": "bash",
        "CreatedAt": "2023-02-22 23:39:22 +0100 CET",
        "ID": "1281e43c27a4",
        "Image": "ghcr.io/example-user/remote-image-with-bash",
        "Labels": "org.opencontainers.image.ref.name=ubuntu,org.opencontainers.image.version=22.04",
        "LocalVolumes": "0",
        "Mounts": "",
        "Names": "hardcore_cerf",
        "Networks": "bridge",
        "Ports": "",
        "RunningFor": "15 minutes ago",
        "Size": "216kB (virtual 1.22GB)",
        "State": "running",
        "Status": "Up 15 minutes"
}

使用jq，您甚至可以从带有-s标志的单个条目中创建有效的json。

[
        {
                "Command": "zsh",
                "CreatedAt": "2023-02-22 23:40:37 +0100 CET",
                "ID": "b2163d5d7229",
                "Image": "local-image-with-zsh",
                "Labels": "org.opencontainers.image.ref.name=ubuntu,org.opencontainers.image.version=22.04",
                "LocalVolumes": "0",
                "Mounts": "",
                "Names": "nervous_einstein",
                "Networks": "bridge",
                "Ports": "",
                "RunningFor": "20 minutes ago",
                "Size": "215kB (virtual 1.22GB)",
                "State": "running",
                "Status": "Up 20 minutes"
        },
        {
                "Command": "bash",
                "CreatedAt": "2023-02-22 23:39:22 +0100 CET",
                "ID": "1281e43c27a4",
                "Image": "ghcr.io/example-user/remote-image-with-bash",
                "Labels": "org.opencontainers.image.ref.name=ubuntu,org.opencontainers.image.version=22.04",
                "LocalVolumes": "0",
                "Mounts": "",
                "Names": "hardcore_cerf",
                "Networks": "bridge",
                "Ports": "",
                "RunningFor": "21 minutes ago",
                "Size": "216kB (virtual 1.22GB)",
                "State": "running",
                "Status": "Up 21 minutes"
        }
]

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Docker --使用json格式化,多个占位符的特定占位符语法

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