[confcom] Add containers from_image command#9505
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kairu-ms merged 19 commits intoAzure:mainfrom Jan 16, 2026
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### Why Addresses - Azure#9222 ### How - [x] Update the code to restore the "attach to first image in input" behaviour - [x] Add two new commands: `fragment push` and `fragment attach` to allow the user to explicitly do one or the other (or both!) - [x] Add new tests which run a local docker registry, and test that the fragments are generated, signed, pushed and attached as expected (as well as the default behaviour) --- This checklist is used to make sure that common guidelines for a pull request are followed. ### Related command <!--- Please provide the related command with az {command} if you can, so that we can quickly route to the related person to review. ---> ### General Guidelines - [x] Have you run `azdev style <YOUR_EXT>` locally? (`pip install azdev` required) - [x] Have you run `python scripts/ci/test_index.py -q` locally? (`pip install wheel==0.30.0` required) - [x] My extension version conforms to the [Extension version schema](https://github.com/Azure/azure-cli/blob/release/doc/extensions/versioning_guidelines.md)
This reverts commit e8f7637.
Addresses - Azure#9222 - [x] Update the code to restore the "attach to first image in input" behaviour - [x] Add two new commands: `fragment push` and `fragment attach` to allow the user to explicitly do one or the other (or both!) - [x] Add new tests which run a local docker registry, and test that the fragments are generated, signed, pushed and attached as expected (as well as the default behaviour) --- This checklist is used to make sure that common guidelines for a pull request are followed. <!--- Please provide the related command with az {command} if you can, so that we can quickly route to the related person to review. ---> - [x] Have you run `azdev style <YOUR_EXT>` locally? (`pip install azdev` required) - [x] Have you run `python scripts/ci/test_index.py -q` locally? (`pip install wheel==0.30.0` required) - [x] My extension version conforms to the [Extension version schema](https://github.com/Azure/azure-cli/blob/release/doc/extensions/versioning_guidelines.md)
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| rule | cmd_name | rule_message | suggest_message |
|---|---|---|---|
| confcom containers | sub group confcom containers added |
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Hi @DomAyre, |
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Thank you for your contribution! We will review the pull request and get back to you soon. |
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The git hooks are available for azure-cli and azure-cli-extensions repos. They could help you run required checks before creating the PR. Please sync the latest code with latest dev branch (for azure-cli) or main branch (for azure-cli-extensions). pip install azdev --upgrade
azdev setup -c <your azure-cli repo path> -r <your azure-cli-extensions repo path>
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Pull request overview
This PR adds a new confcom containers from_image command that generates a partial container policy definition based on an input container image. The command inspects Docker images to extract configuration details (layers, environment variables, commands, working directory) and combines them with platform-specific mounts to produce a security policy container definition.
Key Changes:
- Adds new CLI command
az confcom containers from_imagewith image inspection capabilities - Implements image layer extraction using dmverity-vhd binary
- Creates comprehensive test suite with multiple sample Dockerfiles and expected outputs
Reviewed changes
Copilot reviewed 17 out of 17 changed files in this pull request and generated 6 comments.
Show a summary per file
| File | Description |
|---|---|
setup.py |
Bumps extension version from 1.5.0 to 1.6.0 |
azext_confcom/lib/platform.py |
Defines platform-specific mounts (ACI) for container definitions |
azext_confcom/lib/images.py |
Implements image inspection logic to extract layers and configuration |
azext_confcom/lib/containers.py |
Generates container definitions by combining image data with platform mounts |
azext_confcom/command/containers_from_image.py |
Main command implementation that outputs JSON container definition |
azext_confcom/custom.py |
Registers the new command in the extension's custom commands |
azext_confcom/commands.py |
Adds command group registration for containers subcommands |
azext_confcom/_params.py |
Defines command parameters (image and platform) |
azext_confcom/_help.py |
Adds help documentation for the new command group and command |
azext_confcom/tests/latest/test_confcom_containers_from_image.py |
Comprehensive parametrized tests for the new command |
samples/images/*/Dockerfile |
Sample Dockerfiles for testing different scenarios |
samples/images/*/aci_container.inc.rego |
Expected container definition outputs for each sample |
linter_exclusions.yml |
Adds linter exclusion for positional parameter in new command |
kairu-ms
previously approved these changes
Jan 15, 2026
kairu-ms
approved these changes
Jan 16, 2026
Collaborator
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[Release] Update index.json for extension [ confcom ] : https://dev.azure.com/msazure/One/_build/results?buildId=149572392&view=results |
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Why
This command generates a partial container policy based on an input container image
How
--with-containers#9428 to merge for policy comparison)Testing
Since PRs in my fork won't run the full suite of tests, I create a draft PR onto main of the Azure repo to get test results:
This checklist is used to make sure that common guidelines for a pull request are followed.
Related command
General Guidelines
azdev style <YOUR_EXT>locally? (pip install azdevrequired)python scripts/ci/test_index.py -qlocally? (pip install wheel==0.30.0required)