docker-image-history (1) - Linux Manuals

docker-image-history: Show the history of an image

Command to display docker-image-history manual in Linux: $ man 1 docker-image-history

NAME

docker-image-history - Show the history of an image

SYNOPSIS

docker image history [OPTIONS] IMAGE

DESCRIPTION

Show the history of when and how an image was created.

EXAMPLES

$ docker history fedora
IMAGE          CREATED          CREATED BY                                      SIZE                COMMENT
105182bb5e8b   5 days ago       /bin/sh -c #(nop) ADD file:71356d2ad59aa3119d   372.7 MB
73bd853d2ea5   13 days ago      /bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar   0 B
511136ea3c5a   10 months ago                                                    0 B                 Imported from -

Display comments in the image history

The docker commit command has a -m flag for adding comments to the image. These comments will be displayed in the image history.

$ sudo docker history docker:scm
IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
2ac9d1098bf1        3 months ago        /bin/bash                                       241.4 MB            Added Apache to Fedora base image
88b42ffd1f7c        5 months ago        /bin/sh -c #(nop) ADD file:1fd8d7f9f6557cafc7   373.7 MB            
c69cab00d6ef        5 months ago        /bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar   0 B                 
511136ea3c5a        19 months ago                                                       0 B                 Imported from -

Format the output

The formatting option (--format) will pretty-prints history output using a Go template.

Valid placeholders for the Go template are listed below:

Placeholder	Description
.ID	Image ID
.CreatedSince	Elapsed time since the image was created if --human=true, otherwise timestamp of when image was created
.CreatedAt	Timestamp of when image was created
.CreatedBy	Command that was used to create the image
.Size	Image disk size
.Comment	Comment for image

When using the --format option, the history command will either output the data exactly as the template declares or, when using the table directive, will include column headers as well.

The following example uses a template without headers and outputs the ID and CreatedSince entries separated by a colon for all images:

$ docker images --format "{{.ID}}: {{.CreatedSince}} ago"

cc1b61406712: 2 weeks ago
<missing>: 2 weeks ago
<missing>: 2 weeks ago
<missing>: 2 weeks ago
<missing>: 2 weeks ago
<missing>: 3 weeks ago
<missing>: 3 weeks ago
<missing>: 3 weeks ago

OPTIONS

--format="" Pretty-print images using a Go template

-h, --help[=false] help for history

-H, --human[=true] Print sizes and dates in human readable format

--no-trunc[=false] Don't truncate output

-q, --quiet[=false] Only show image IDs