add note regarding build caching

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Wonderfall 2021-07-25 17:57:32 +02:00 committed by GitHub
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@ -11,6 +11,8 @@ Don't run random images from random dudes on the Internet. Ideally, you want to
Images are scanned every day by [Trivy](https://github.com/aquasecurity/trivy) for OS vulnerabilities. Latest tag/version is automatically built weekly, so you should often update your images regardless if you're already using the latest Nextcloud version.
If you're building manually, you should always build production images without cache (use `docker build --no-cache` for instance). Latest dependencies will hence be used instead of outdated ones due to a cached layer.
## Features
- Fetching PHP/nginx from their official images.
- **Rootless**: no privilege at any time, even at startup.