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db23e12611
External containers are containers created outside of Podman. For example Buildah and CRI-O Containers. $ buildah from alpine alpine-working-container $ buildah run alpine-working-container touch /test $ podman container exists --external alpine-working-container $ podman container diff alpine-working-container C /etc A /test Added --external flag to refer to external containers, rather then --storage. Added --external for podman container exists and modified podman ps to use --external rather then --storage. It was felt that --storage would confuse the user into thinking about changing the storage driver or options. --storage is still supported through the use of aliases. Finally podman contianer diff, does not require the --external flag, since it there is little change of users making the mistake, and would just be a pain for the user to remember the flag. podman container exists --external is required because it could fool scripts that rely on the existance of a Podman container, and there is a potential for a partial deletion of a container, which could mess up existing users. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
51 lines
1.4 KiB
Markdown
51 lines
1.4 KiB
Markdown
% podman-container-exists(1)
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## NAME
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podman-container-exists - Check if a container exists in local storage
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## SYNOPSIS
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**podman container exists** [*options*] *container*
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## DESCRIPTION
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**podman container exists** checks if a container exists in local storage. The **ID** or **Name**
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of the container may be used as input. Podman will return an exit code
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of `0` when the container is found. A `1` will be returned otherwise. An exit code of `125` indicates there
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was an issue accessing the local storage.
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## OPTIONS
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**--external**=*true|false*
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Check for external containers as well as Podman containers. These external containers are generally created via other container technology such as Buildah or CRI-O.
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**-h**, **--help**
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Print usage statement
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## Examples
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Check if an container called `webclient` exists in local storage (the container does actually exist).
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```
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$ podman container exists webclient
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$ echo $?
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0
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```
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Check if an container called `webbackend` exists in local storage (the container does not actually exist).
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```
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$ podman container exists webbackend
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$ echo $?
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1
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```
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Check if an container called `ubi8-working-container` created via Buildah exists in local storage (the container does not actually exist).
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```
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$ podman container exists --external ubi8-working-container
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$ echo $?
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1
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```
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## SEE ALSO
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podman(1)
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## HISTORY
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November 2018, Originally compiled by Brent Baude (bbaude at redhat dot com)
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