Temporarily disable SBOMs on GHA

We're chasing an issue with GHA and our SBOM indexer that's leading to *empty* SBOMs being published, which isn't great.  For now, let's disable SBOMs for all our GHA architectures until we figure it out.

Author: tianon

.test/meta-commands/out.sh

@@ -137,6 +137,57 @@ jq -s '
 	)
 ' temp/index.json > temp/index.json.new
 mv temp/index.json.new temp/index.json
+# </build>
+# <push>
+crane push --index temp 'oisupport/staging-amd64:191402ad0feacf03daf9d52a492207e73ef08b0bd17265043aea13aa27e2bb3f'
+rm -rf temp
+# </push>
+
+# busybox:1.36.1 [arm32v5]
+# <pull>
+
+# </pull>
+# <build>
+export BASHBREW_CACHE="${BASHBREW_CACHE:-${XDG_CACHE_HOME:-$HOME/.cache}/bashbrew}"
+gitCache="$BASHBREW_CACHE/git"
+git init --bare "$gitCache"
+_git() { git -C "$gitCache" "$@"; }
+_git config gc.auto 0
+_commit() { _git rev-parse '7044abc7ee26712d998311b402b975124786e0cf^{commit}'; }
+if ! _commit &> /dev/null; then _git fetch 'https://github.com/docker-library/busybox.git' '7044abc7ee26712d998311b402b975124786e0cf:' || _git fetch 'refs/heads/dist-arm32v5:'; fi
+_commit
+mkdir temp
+_git archive --format=tar '7044abc7ee26712d998311b402b975124786e0cf:latest/glibc/arm32v5/' | tar -xvC temp
+jq -s '
+	if length != 1 then
+		error("unexpected '\''oci-layout'\'' document count: " + length)
+	else .[0] end
+	| if .imageLayoutVersion != "1.0.0" then
+		error("unsupported imageLayoutVersion: " + .imageLayoutVersion)
+	else . end
+' temp/oci-layout > /dev/null
+jq -s '
+	if length != 1 then
+		error("unexpected '\''index.json'\'' document count: " + length)
+	else .[0] end
+	| if .schemaVersion != 2 then
+		error("unsupported schemaVersion: " + .schemaVersion)
+	else . end
+	| if .manifests | length != 1 then
+		error("expected only one manifests entry, not " + (.manifests | length))
+	else . end
+	| .manifests[0] |= (
+		if .mediaType != "application/vnd.oci.image.manifest.v1+json" then
+			error("unsupported descriptor mediaType: " + .mediaType)
+		else . end
+		| if .size < 0 then
+			error("invalid descriptor size: " + .size)
+		else . end
+		| del(.annotations, .urls)
+		| .annotations = {"org.opencontainers.image.source":"https://github.com/docker-library/busybox.git","org.opencontainers.image.revision":"7044abc7ee26712d998311b402b975124786e0cf","org.opencontainers.image.created":"2024-02-28T00:44:18Z","org.opencontainers.image.version":"1.36.1","org.opencontainers.image.url":"https://hub.docker.com/_/busybox","com.docker.official-images.bashbrew.arch":"arm32v5","org.opencontainers.image.base.name":"scratch"}
+	)
+' temp/index.json > temp/index.json.new
+mv temp/index.json.new temp/index.json
 # SBOM
 originalImageManifest="$(jq -r '.manifests[0].digest' temp/index.json)"
 SOURCE_DATE_EPOCH=1709081058 \
@@ -146,7 +197,7 @@ SOURCE_DATE_EPOCH=1709081058 \
 	--build-arg BUILDKIT_DOCKERFILE_CHECK=skip=all \
 	--sbom=generator="$BASHBREW_BUILDKIT_SBOM_GENERATOR" \
 	--output 'type=oci,tar=false,dest=sbom' \
-	--platform 'linux/amd64' \
+	--platform 'linux/arm/v5' \
 	--build-context "fake=oci-layout://$PWD/temp@$originalImageManifest" \
 	- <<<'FROM fake'
 sbomIndex="$(jq -r '.manifests[0].digest' sbom/index.json)"
@@ -175,6 +226,6 @@ jq -r --argjson sbomManifestDesc "$sbomManifestDesc" '.manifests += [ $sbomManif
 mv temp/index.json.new temp/index.json
 # </build>
 # <push>
-crane push --index temp 'oisupport/staging-amd64:191402ad0feacf03daf9d52a492207e73ef08b0bd17265043aea13aa27e2bb3f'
+crane push --index temp 'oisupport/staging-arm32v5:6dad189d12c5b50de48dab19c13869fdf25219dc430fc1d4c8a8dcc7bc893e69'
 rm -rf temp
 # </push>

.test/meta-commands/test.jq

@@ -1,8 +1,10 @@
 include "meta";
+include "doi"; # TODO remove this
 [
 	first(.[] | select(normalized_builder == "buildkit")),
 	first(.[] | select(normalized_builder == "classic")),
 	first(.[] | select(normalized_builder == "oci-import")),
+	first(.[] | select(normalized_builder == "oci-import" and build_should_sbom)), # TODO remove this
 	empty
 ]
 | map(

doi.jq

@@ -168,6 +168,8 @@ def build_should_sbom:
 			| index($i)
 		)
 	)
+	# TODO once we solve the issues with GHA and SBOM generation ("docker/scout-sbom-indexer" returning zero results), remove this added constraint
+	and (.build.arch as $arch | ["amd64","i386","windows-amd64"] | index($arch) | not) # see also GHA arches in Jenkinsfile.trigger
 ;
 
 # input: "build" object (with "buildId" top level key)