mirror of https://github.com/docker/cli.git
trust sign: docs for docker trust sign
Signed-off-by: Riyaz Faizullabhoy <riyaz.faizullabhoy@docker.com>
This commit is contained in:
Riyaz Faizullabhoy
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---
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title: "trust sign"
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description: "The sign command description and usage"
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keywords: "sign, notary, trust"
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---
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<!-- This file is maintained within the docker/cli Github
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# trust sign
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```markdown
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Usage: docker trust sign [OPTIONS] IMAGE:TAG
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Sign an image
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```
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## Description
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Docker trust sign adds signatures to tags to create signed repositories.
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## Examples
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### Sign a tag as a repo admin
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For an image like so:
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```bash
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$ docker trust inspect example/trust-demo
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SIGNED TAG DIGEST SIGNERS
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v1 c24134c079c35e698060beabe110bb83ab285d0d978de7d92fed2c8c83570a41 (Repo Admin)
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Administrative keys for example/trust-demo:
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Repository Key: 36d4c3601102fa7c5712a343c03b94469e5835fb27c191b529c06fd19c14a942
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Root Key: 246d360f7c53a9021ee7d4259e3c5692f3f1f7ad4737b1ea8c7b8da741ad980b
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```
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We can sign a new tag with `docker trust sign`:
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```bash
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$ docker trust sign example/trust-demo:v2
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Signing and pushing trust metadata for example/trust-demo:v2
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The push refers to a repository [docker.io/example/trust-demo]
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eed4e566104a: Layer already exists
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77edfb6d1e3c: Layer already exists
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c69f806905c2: Layer already exists
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582f327616f1: Layer already exists
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a3fbb648f0bd: Layer already exists
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5eac2de68a97: Layer already exists
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8d4d1ab5ff74: Layer already exists
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v2: digest: sha256:8f6f460abf0436922df7eb06d28b3cdf733d2cac1a185456c26debbff0839c56 size: 1787
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Signing and pushing trust metadata
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Enter passphrase for repository key with ID 36d4c36:
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Successfully signed "docker.io/example/trust-demo":v2
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```
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`docker trust inspect` should now list the new signature:
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```bash
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$ docker trust inspect example/trust-demo
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SIGNED TAG DIGEST SIGNERS
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v1 c24134c079c35e698060beabe110bb83ab285d0d978de7d92fed2c8c83570a41 (Repo Admin)
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v2 8f6f460abf0436922df7eb06d28b3cdf733d2cac1a185456c26debbff0839c56 (Repo Admin)
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Administrative keys for example/trust-demo:
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Repository Key: 36d4c3601102fa7c5712a343c03b94469e5835fb27c191b529c06fd19c14a942
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Root Key: 246d360f7c53a9021ee7d4259e3c5692f3f1f7ad4737b1ea8c7b8da741ad980b
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```
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### Sign a tag as a signer
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For an image like so:
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```bash
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$ docker trust inspect example/trust-demo
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No signatures for example/trust-demo
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List of signers and their KeyIDs:
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SIGNER KEYS
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alice 05e87edcaecb
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bob 5600f5ab76a2
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Administrative keys for example/trust-demo:
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Repository Key: ecc457614c9fc399da523a5f4e24fe306a0a6ee1cc79a10e4555b3c6ab02f71e
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Root Key: 3cb2228f6561e58f46dbc4cda4fcaff9d5ef22e865a94636f82450d1d2234949
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```
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We can sign a new tag with `docker trust sign`:
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```bash
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$ docker trust sign example/trust-demo:v1
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Signing and pushing trust metadata for example/trust-demo:v1
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The push refers to a repository [docker.io/example/trust-demo]
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26b126eb8632: Layer already exists
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220d34b5f6c9: Layer already exists
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8a5132998025: Layer already exists
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aca233ed29c3: Layer already exists
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e5d2f035d7a4: Layer already exists
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v1: digest: sha256:74d4bfa917d55d53c7df3d2ab20a8d926874d61c3da5ef6de15dd2654fc467c4 size: 1357
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Signing and pushing trust metadata
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Enter passphrase for delegation key with ID 27d42a8:
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Successfully signed "docker.io/example/trust-demo":v1
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```
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`docker trust inspect` should now list the new signature:
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```bash
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$ docker trust inspect example/trust-demo
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SIGNED TAG DIGEST SIGNERS
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v1 74d4bfa917d55d53c7df3d2ab20a8d926874d61c3da5ef6de15dd2654fc467c4 alice
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List of signers and their KeyIDs:
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SIGNER KEYS
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alice 05e87edcaecb
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bob 5600f5ab76a2
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Administrative keys for example/trust-demo:
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Repository Key: ecc457614c9fc399da523a5f4e24fe306a0a6ee1cc79a10e4555b3c6ab02f71e
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Root Key: 3cb2228f6561e58f46dbc4cda4fcaff9d5ef22e865a94636f82450d1d2234949
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```
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## Initialize a new repo and sign a tag
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When signing an image on a repo for the first time, `docker trust sign` sets up new keys and then signs the image.
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```bash
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$ docker trust inspect example/trust-demo
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No signatures or cannot access example/trust-demo
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```
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```bash
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$ docker trust sign example/trust-demo:v1
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Signing and pushing trust metadata for example/trust-demo:v1
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Enter passphrase for root key with ID 36cac18:
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Enter passphrase for new repository key with ID 731396b:
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Repeat passphrase for new repository key with ID 731396b:
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Enter passphrase for new alice key with ID 6d52b29:
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Repeat passphrase for new alice key with ID 6d52b29:
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Created signer: alice
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Finished initializing "docker.io/example/trust-demo"
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The push refers to a repository [docker.io/example/trust-demo]
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eed4e566104a: Layer already exists
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77edfb6d1e3c: Layer already exists
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c69f806905c2: Layer already exists
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582f327616f1: Layer already exists
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a3fbb648f0bd: Layer already exists
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5eac2de68a97: Layer already exists
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8d4d1ab5ff74: Layer already exists
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v1: digest: sha256:8f6f460abf0436922df7eb06d28b3cdf733d2cac1a185456c26debbff0839c56 size: 1787
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Signing and pushing trust metadata
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Enter passphrase for alice key with ID 6d52b29:
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Successfully signed "docker.io/example/trust-demo":v1
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```
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```bash
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$ docker trust inspect example/trust-demo
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SIGNED TAG DIGEST SIGNERS
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v1 8f6f460abf0436922df7eb06d28b3cdf733d2cac1a185456c26debbff0839c56 alice
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List of signers and their KeyIDs:
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SIGNER KEYS
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alice 6d52b29d940f
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Administrative keys for example/trust-demo:
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Repository Key: 731396b65eac3ef5ec01406801bdfb70feb40c17808d2222427c18046eb63beb
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Root Key: 70d174714bd1461f6c58cb3ef39087c8fdc7633bb11a98af844fd9a04e208103
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```
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