Docker commit 简单使用

该命令用于提交现有 container 为镜像, 以便更好的复用和保存数据
https://docs.docker.com/reference/cli/docker/container/commit

Basic Usage#

docker container commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]

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docker commit <container_id> <image_name> [-a <author>] [-m <message>] [-c <change>] [-p pauseContainer? (default: true)]

若要提交为本地镜像, image_name 请置为 myImage:myTag 而非 username/myImage:myTag

Example#

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docker commit myContainer myImage:myTag

Use local image#

Run local Docker Registry (at localhost:5000)

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docker run -d -p 5000:5000 --restart=always --name registry registry:2

Add the tag to local registry

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docker tag <myImage>[:<myTag>] localhost:<any-port>/<any-name>[:<any-tag>]

Your image name: localhost:5000/<any-name>[:<any-tag>]

See Also#

https://docs.docker.com/reference/compose-file/services/#pull_policy

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# 从不拉取，如果本地不存在则报错
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pull_policy: never
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# -----------------------------
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# 始终都会拉取
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pull_policy: always
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# 本地不存在时拉取
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pull_policy: missing
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# 如果已存在，重构镜像
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pull_policy: build