`local-rustfs-bootstrap.sh` defaulted RUSTFS_IMAGE to the floating
`rustfs/rustfs:latest`, which resolved to 1.0.0-beta.4 (2026-05-21).
beta.4 added a credentials-policy check that refuses to start when the
access/secret keys are values it treats as "default"
(rustfsadmin/rustfsadmin, the script's defaults) — so a fresh bootstrap
broke at RustFS startup.
Pin the default to 1.0.0-beta.3 to match CI (.github/workflows/ci.yml)
and the v0.5.0 release notes, and additionally pass
RUSTFS_ALLOW_INSECURE_DEFAULT_CREDENTIALS=true so the script stays
forward-compatible if RUSTFS_IMAGE is overridden to beta.4+.
Co-authored-by: Ragnor Comerford <ragnor@equator.so>
