- Run as the .NET image's non-root app user (UID 1654) with root-owned
application files and an app-owned /app/data that fresh named volumes inherit.
- Add a curl HEALTHCHECK on /healthz (30s/5s/10s/3, 2s start interval), keep the
explicit 8090 URL and clear the base image's 8080 port default.
- Parameterize VERSION/SOURCE_REVISION and base images; add OCI labels with
development defaults.
- Add an image-only Compose example (required image and bind address, named
volume, cap_drop ALL, no-new-privileges) and an env template.
- Document deployment, the upload limit, scoped ownership preparation, and
checked backup/restore/upgrade functions that refuse existing destinations and
verify the metadata list and every archive hash before switching volumes.
- Extend the container smoke: image user/healthcheck/label contract, PID 1 UID,
capabilities and writable paths, Docker-reported health, near-limit and
oversized uploads, stopped-service backup restored into a second volume, and
startup failure on read-only and root-owned data mounts.
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