docker - 多个docker过滤器选项是否执行本地AND或OR操作？

Question

我正在尝试使用多个过滤器执行prune操作。这在docs here中涉及:

The filtering flag (--filter) format is of “key=value”. If there is more than one filter, then pass multiple flags (e.g., --filter "foo=bar" --filter "bif=baz")

文档未提及是否使用多个过滤器，例如使用逻辑 AND或 OR操作将它们组合在一起。

我希望它是一个 AND操作，以便可以执行以下操作:

docker image prune --all --force --filter="label=com.company.product=myproduct" \
    --filter="label!=com.company.project=proj2"

具有以下标签的Dockerfile不会被修剪:

LABEL com.company.product="myproduct" com.company.project="proj2"

这可能吗？

Answer 1

简短答案

这是一个AND。

测试...

3 Dockerfiles:

FROM alpine
LABEL apples="fruit"

FROM alpine
LABEL oranges="fruit"

FROM alpine
LABEL apples="fruit" oranges="fruit"

3 images:

$ docker image ls 
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
both                latest              e9e48f31222f        11 seconds ago      4.41MB
oranges             latest              f384e4db9974        33 seconds ago      4.41MB
apples              latest              06fa8c565ec1        51 seconds ago      4.41MB

--filter测试如下*:

$ docker image ls --filter label=apples=fruit
REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
both                latest              e9e48f31222f        34 seconds ago       4.41MB
apples              latest              06fa8c565ec1        About a minute ago   4.41MB

$ docker image ls --filter label=oranges=fruit
REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
both                latest              e9e48f31222f        44 seconds ago       4.41MB
oranges             latest              f384e4db9974        About a minute ago   4.41MB

$ docker image ls --filter label=apples=fruit --filter label=oranges=fruit
REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
both                latest              e9e48f31222f        About a minute ago   4.41MB

修剪

名为 both的图像(具有两个标签)被删除:

$ docker image prune -a --filter label=apples=fruit --filter label=oranges=fruit
WARNING! This will remove all images without at least one container associated to them.
Are you sure you want to continue? [y/N] y
Deleted Images:
untagged: both:latest
deleted: sha256:e9e48f31222f04dd54cffb4688367338d8e061ef3b1471768c1ef6a7045007ab

*注意: docker image ls不适用于 docs中的 负过滤( !=):

Predicting what will be removed

If you are using positive filtering (testing for the existence of a label or that a label has a specific value), you can use docker image ls with the same filtering syntax to see which images match your filter.

However, if you are using negative filtering (testing for the absence of a label or that a label does not have a specific value), this type of filter does not work with docker image ls so you cannot easily predict which images will be removed. In addition, the confirmation prompt for docker image prune always warns that all dangling images will be removed, even if you are using --filter.