feat(acl): add FIPS image builds for Azure Container Linux#8463
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hbeberman
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AbelHu,
Devinwong,
SriHarsha001,
awesomenix,
calvin197,
cameronmeissner,
djsly,
ganeshkumarashok,
junjiezhang1997,
lilypan26,
mxj220,
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phealy,
r2k1,
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Pull request overview
This PR adds support for building and validating new FIPS-enabled Azure Container Linux (ACL) Trusted Launch Gen2 VHDs (AMD64 + ARM64), wiring them through the VHD builder, SIG image config, and e2e coverage.
Changes:
- Add an ACL-specific
installFIPSimplementation and invoke it during ACL VHD build whenENABLE_FIPS=True. - Introduce new ACL FIPS distro identifiers and SIG image definitions/templates to make the images selectable/servable.
- Add pipeline jobs/parameters for the two new builds and add validation for ACL FIPS behavior (VHD content tests + e2e).
Reviewed changes
Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
vhdbuilder/scripts/linux/acl/tool_installs_acl.sh |
Adds ACL installFIPS that installs the UKI addon and writes a marker file. |
vhdbuilder/packer/test/linux-vhd-content-test.sh |
Extends FIPS validation to ACL and checks ACL-specific marker/addon files. |
vhdbuilder/packer/pre-install-dependencies.sh |
Calls installFIPS for ACL builds when FIPS is enabled. |
spec/vhdbuilder/packer/ensure_sig_image_name_linux_spec.sh |
Adds ShellSpec coverage for new ACL FIPS SKU naming. |
pkg/agent/datamodel/types.go |
Adds new ACL FIPS distro constants and registers them as VHD-available. |
pkg/agent/datamodel/types_test.go |
Extends ACL detection tests to cover new FIPS distros. |
pkg/agent/datamodel/sig_config.go |
Adds SIG config templates + distro mappings for ACL FIPS images. |
pkg/agent/datamodel/sig_config_test.go |
Updates expected SIG config map contents/counts and validates new entries. |
pkg/agent/bakerapi_test.go |
Ensures API-level tests include new ACL FIPS distros. |
e2e/validators.go |
Adds an ACL FIPS validator and ensures algif_aead validation isn’t skipped for ACL. |
e2e/scenario_test.go |
Adds an e2e scenario for the AMD64 ACL FIPS TL Gen2 image. |
e2e/config/vhd.go |
Adds image definitions for ACL FIPS TL Gen2 (amd64 + arm64). |
.pipelines/.vsts-vhd-builder.yaml |
Adds CI build jobs for ACL FIPS TL Gen2 (amd64 + arm64). |
.pipelines/.vsts-vhd-builder-release.yaml |
Adds release-pipeline parameters/jobs for the two new builds. |
Devinwong
reviewed
May 7, 2026
Adds a pre-flight check that /boot/acl/uki-addons/fips.addon.efi exists before attempting to install it, producing a clear error message if the source addon is missing. The Packer invocation already runs the script under bash -eux so a missing addon would fail the build either way, but the explicit check yields a much clearer diagnostic than the raw 'install: cannot stat' stderr.
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Devinwong
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May 11, 2026
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What this PR does / why we need it:
This PR adds two FIPS enabled image builds (AMD64 and ARM64) for Azure Container Linux. Distinct images are required because FIPS enablement must be determined pre-boot, in-line with other AKS distros.
Which issue(s) this PR fixes:
Fixes #