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[codex] Add GHCR preflight check for main image publish #845

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[codex] Add GHCR preflight check for main image publish #845

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29 changes: 29 additions & 0 deletions .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -222,6 +222,35 @@ jobs:
username: ${{ secrets.GHCR_USERNAME != '' && secrets.GHCR_USERNAME || github.actor }}
password: ${{ secrets.GHCR_TOKEN != '' && secrets.GHCR_TOKEN || secrets.GITHUB_TOKEN }}

- name: Verify GHCR access for main image package
env:
GHCR_USERNAME: ${{ secrets.GHCR_USERNAME != '' && secrets.GHCR_USERNAME || github.actor }}
GHCR_PASSWORD: ${{ secrets.GHCR_TOKEN != '' && secrets.GHCR_TOKEN || secrets.GITHUB_TOKEN }}
PACKAGE_PATH: ${{ steps.prep.outputs.owner_lc }}/yacht
run: |
status_code="$(
curl -sS -o /tmp/ghcr-main-package-check.txt -w '%{http_code}' \
-u "${GHCR_USERNAME}:${GHCR_PASSWORD}" \
"https://ghcr.io/v2/${PACKAGE_PATH}/tags/list?n=1"
)"

case "${status_code}" in
200|404)
echo "GHCR package access check returned ${status_code}; continuing."
;;
401|403)
echo "GHCR package access check failed with HTTP ${status_code} for ${PACKAGE_PATH}." >&2
echo "The workflow can authenticate to GHCR, but it cannot access the main image package namespace." >&2
echo "Grant Yacht-sh/Yacht Actions access to ghcr.io/${PACKAGE_PATH} or provide GHCR_USERNAME/GHCR_TOKEN with read:packages and write:packages." >&2
exit 1
;;
*)
echo "Unexpected GHCR package access response ${status_code} for ${PACKAGE_PATH}." >&2
cat /tmp/ghcr-main-package-check.txt >&2 || true
exit 1
;;
esac

- name: Build and push main image
uses: docker/build-push-action@v6
with:
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