DockerCLI/docs/reference/commandline/image_history.md

79 lines
6.0 KiB
Markdown
Raw Normal View History

# history
<!---MARKER_GEN_START-->
Show the history of an image
### Aliases
`docker image history`, `docker history`
### Options
| Name | Type | Default | Description |
|:----------------------|:---------|:--------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [`--format`](#format) | `string` | | Format output using a custom template:<br>'table': Print output in table format with column headers (default)<br>'table TEMPLATE': Print output in table format using the given Go template<br>'json': Print in JSON format<br>'TEMPLATE': Print output using the given Go template.<br>Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates |
| `-H`, `--human` | `bool` | `true` | Print sizes and dates in human readable format |
| `--no-trunc` | `bool` | | Don't truncate output |
| `-q`, `--quiet` | `bool` | | Only show image IDs |
<!---MARKER_GEN_END-->
## Examples
To see how the `docker:latest` image was built:
```console
$ docker history docker
IMAGE CREATED CREATED BY SIZE COMMENT
3e23a5875458 8 days ago /bin/sh -c #(nop) ENV LC_ALL=C.UTF-8 0 B
8578938dd170 8 days ago /bin/sh -c dpkg-reconfigure locales && loc 1.245 MB
be51b77efb42 8 days ago /bin/sh -c apt-get update && apt-get install 338.3 MB
4b137612be55 6 weeks ago /bin/sh -c #(nop) ADD jessie.tar.xz in / 121 MB
750d58736b4b 6 weeks ago /bin/sh -c #(nop) MAINTAINER Tianon Gravi <ad 0 B
511136ea3c5a 9 months ago 0 B Imported from -
```
To see how the `docker:apache` image was added to a container's base image:
```console
$ 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 -
```
### <a name="format"></a> Format the output (--format)
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 either
outputs the data exactly as the template declares or, when using the
`table` directive, includes column headers as well.
The following example uses a template without headers and outputs the
`ID` and `CreatedSince` entries separated by a colon (`:`) for the `busybox`
image:
```console
$ docker history --format "{{.ID}}: {{.CreatedSince}}" busybox
f6e427c148a7: 4 weeks ago
<missing>: 4 weeks ago
```