podman/podman-image-diff.1.md at 3221f50a4582153fa65be4f9493739e1e0ed1c33

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Paul Holzinger 8f6a0243f4 podman diff accept two images or containers

First, make podman diff accept optionally a second argument. This allows
the user to specify a second image/container to compare the first with.
If it is not set the parent layer will be used as before.

Second, podman container diff should only use containers and podman
image diff should only use images. Previously, podman container diff
would use the image when both an image and container with this name
exists.

To make this work two new parameters have been added to the api. If they
are not used the previous behaviour is used. The same applies to the
bindings.

Fixes #10649

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

2021-07-02 17:11:56 +02:00

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% podman-image-diff(1)

NAME

podman-image-diff - Inspect changes on an image's filesystem

SYNOPSIS

podman image diff [options] image [image]

DESCRIPTION

Displays changes on an image's filesystem. The image will be compared to its parent layer or the second argument when given.

The output is prefixed with the following symbols:

Symbol	Description
A	A file or directory was added.
D	A file or directory was deleted.
C	A file or directory was changed.

OPTIONS

--format

Alter the output into a different format. The only valid format for podman image diff is json.

EXAMPLE

$ podman diff redis:old
C /usr
C /usr/local
C /usr/local/bin
A /usr/local/bin/docker-entrypoint.sh

$ podman diff --format json redis:old redis:alpine
{
  "changed": [
    "/usr",
    "/usr/local",
    "/usr/local/bin"
  ],
  "added": [
    "/usr/local/bin/docker-entrypoint.sh"
  ]
}

HISTORY

August 2017, Originally compiled by Ryan Cole rycole@redhat.com

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