ci: publish runner image only on manual dispatch

2026-09-21 17:15:33 +00:00
parent 68c3771dc8
commit 2ffc45c766
3 changed files with 103 additions and 115 deletions
@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+set -euo pipefail
+set +x
+
+: "${GITHUB_SHA:?GITHUB_SHA is required}"
+: "${IMAGE_NAME:?IMAGE_NAME is required}"
+: "${IMAGE_REPOSITORY:?IMAGE_REPOSITORY is required}"
+: "${IMAGE_DOCKERFILE:?IMAGE_DOCKERFILE is required}"
+: "${PUSH_REGISTRY:?PUSH_REGISTRY is required}"
+: "${PULL_REGISTRY:?PULL_REGISTRY is required}"
+: "${SPIRE_AGENT_SOCKET:?SPIRE_AGENT_SOCKET is required}"
+
+# Bootstrap the image that first introduces automatic Docker setup. Once that
+# runner is deployed, the job-started hook makes this an idempotent no-op.
+sudo scripts/setup-job-docker
+
+image_tag="sha-${GITHUB_SHA}"
+metadata="${IMAGE_NAME}-metadata.json"
+docker_config=$(mktemp -d)
+jwt_file=$(mktemp)
+cleanup() {
+  docker buildx rm ci-builder >/dev/null 2>&1 || true
+  rm -rf -- "$docker_config" "$jwt_file"
+}
+trap cleanup EXIT
+export DOCKER_CONFIG="$docker_config"
+
+/opt/spire/bin/spire-agent api fetch jwt \
+  -audience zot \
+  -socketPath "$SPIRE_AGENT_SOCKET" \
+  -output json >"$jwt_file"
+# shellcheck disable=SC2016
+jq -er '.[0].svids[0].svid' "$jwt_file" | \
+  docker login "$PUSH_REGISTRY" --username zot --password-stdin
+
+docker buildx create \
+  --name ci-builder \
+  --driver docker-container \
+  --use
+
+docker buildx build \
+  --builder ci-builder \
+  --platform linux/amd64 \
+  --file "$IMAGE_DOCKERFILE" \
+  --tag "${PUSH_REGISTRY}/${IMAGE_REPOSITORY}:${image_tag}" \
+  --tag "${PUSH_REGISTRY}/${IMAGE_REPOSITORY}:main" \
+  --provenance=mode=max \
+  --sbom=true \
+  --metadata-file "$metadata" \
+  --push \
+  .
+
+image_digest=$(
+  # shellcheck disable=SC2016
+  jq -er '."containerimage.digest"' "$metadata"
+)
+image_ref="${PULL_REGISTRY}/${IMAGE_REPOSITORY}@${image_digest}"
+
+printf '%s=%s\n' "$IMAGE_NAME" "$image_ref"
+if [[ -n "${GITHUB_STEP_SUMMARY:-}" ]]; then
+  {
+    printf '## Published image\n\n'
+    # shellcheck disable=SC2016
+    printf -- '- %s: `%s`\n' "$IMAGE_NAME" "$image_ref"
+    # shellcheck disable=SC2016
+    printf -- '- Source: `%s`\n' "$GITHUB_SHA"
+  } >>"$GITHUB_STEP_SUMMARY"
+fi