mirror of https://github.com/docker/docs.git
83 lines
3.2 KiB
YAML
83 lines
3.2 KiB
YAML
command: docker history
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short: Show the history of an image
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long: Show the history of an image
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usage: docker history [OPTIONS] IMAGE
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pname: docker
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plink: docker.yaml
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options:
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- option: format
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description: Pretty-print images using a Go template
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- option: human
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shorthand: H
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default_value: "true"
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description: Print sizes and dates in human readable format
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- option: no-trunc
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default_value: "false"
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description: Don't truncate output
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- option: quiet
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shorthand: q
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default_value: "false"
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description: Only show numeric IDs
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examples: |-
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To see how the `docker:latest` image was built:
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```bash
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$ docker history docker
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IMAGE CREATED CREATED BY SIZE COMMENT
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3e23a5875458 8 days ago /bin/sh -c #(nop) ENV LC_ALL=C.UTF-8 0 B
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8578938dd170 8 days ago /bin/sh -c dpkg-reconfigure locales && loc 1.245 MB
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be51b77efb42 8 days ago /bin/sh -c apt-get update && apt-get install 338.3 MB
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4b137612be55 6 weeks ago /bin/sh -c #(nop) ADD jessie.tar.xz in / 121 MB
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750d58736b4b 6 weeks ago /bin/sh -c #(nop) MAINTAINER Tianon Gravi <ad 0 B
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511136ea3c5a 9 months ago 0 B Imported from -
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```
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To see how the `docker:apache` image was added to a container's base image:
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```bash
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$ docker history docker:scm
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IMAGE CREATED CREATED BY SIZE COMMENT
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2ac9d1098bf1 3 months ago /bin/bash 241.4 MB Added Apache to Fedora base image
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88b42ffd1f7c 5 months ago /bin/sh -c #(nop) ADD file:1fd8d7f9f6557cafc7 373.7 MB
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c69cab00d6ef 5 months ago /bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar 0 B
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511136ea3c5a 19 months ago 0 B Imported from -
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```
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### Format the output
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The formatting option (`--format`) will pretty-prints history output
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using a Go template.
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Valid placeholders for the Go template are listed below:
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| Placeholder | Description |
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| --------------- | ----------- |
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| `.ID` | Image ID |
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| `.CreatedSince` | Elapsed time since the image was created if `--human=true`, otherwise timestamp of when image was created |
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| `.CreatedAt` | Timestamp of when image was created |
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| `.CreatedBy` | Command that was used to create the image |
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| `.Size` | Image disk size |
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| `.Comment` | Comment for image |
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When using the `--format` option, the `history` command will either
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output the data exactly as the template declares or, when using the
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`table` directive, will include column headers as well.
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The following example uses a template without headers and outputs the
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`ID` and `CreatedSince` entries separated by a colon for all images:
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```bash
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$ docker images --format "{{.ID}}: {{.Created}} ago"
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cc1b61406712: 2 weeks ago
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<missing>: 2 weeks ago
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<missing>: 2 weeks ago
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<missing>: 2 weeks ago
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<missing>: 2 weeks ago
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<missing>: 3 weeks ago
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<missing>: 3 weeks ago
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<missing>: 3 weeks ago
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```
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