Adding vfs to buildah script

2026-06-13 08:30:59 +00:00
parent b948557cd7
commit e98d8813cf
1 changed files with 8 additions and 0 deletions
@@ -91,6 +91,14 @@ LABELS=(
 )

 if command -v buildah >/dev/null; then
+    # Default buildah to the vfs storage driver. Inside a container (e.g. a CI
+    # runner) the host fs is overlayfs, and buildah's default 'overlay' driver
+    # can't stack overlay-on-overlay without fuse-overlayfs ("backing file
+    # system is unsupported"). vfs needs no overlay and is fine for this tiny
+    # FROM-scratch image. Override by exporting STORAGE_DRIVER on a build host
+    # with native overlay support.
+    export STORAGE_DRIVER="${STORAGE_DRIVER:-vfs}"
+
    ctr=$(buildah from scratch)
    buildah copy "$ctr" "$STAGE/artifacts" /artifacts
    for l in "${LABELS[@]}"; do buildah config --label "$l" "$ctr"; done