MinIO

MinIO is a self-hosted S3-compatible server. Most of the Quickstart wiring is the same, but path-style addressing is required, and CORS is handled at the server — not like AWS bucket CORS.

Set the shared S3_* env vars in Quickstart, then apply the extras below.

Path style (required)

Add forcePathStyle: true to the Quickstart S3Client. Without it, typical MinIO installs fail because object URLs must look like http://host:9000/bucket/key.

Point S3_ENDPOINT at the API port (for example http://localhost:9000), not the console UI. For local MinIO, S3_REGION is usually "us-east-1".

CORS (required for browser uploads)

Community MinIO does not rely on AWS-style per-bucket CORS. Origins are allowed with a server env var:

MINIO_API_CORS_ALLOW_ORIGIN=https://your-app.example

The default is * — fine for local development. Set an explicit origin when the app and MinIO run on different hosts, or when you lock CORS down. An https://… app talking to http://localhost:9000 is still cross-origin, so the browser enforces CORS either way.

Access control

Do not expect AWS-style object ACL. Prefer a bucket policy for public reads, or keep objects private and use presigned download. Leave resolveObjectAcl off.