Files
7012d86d52 feat: configure S3 URL addressing style (#3400)
## Summary

- add one strict `BUZZ_S3_ADDRESSING_STYLE=path|virtual` setting shared
by media and Git/CAS storage
- preserve path-style defaults for bundled Compose/Helm MinIO while
supporting Railway's virtual-hosted bucket contract
- fail startup on invalid or non-Unicode values before dependency
connection, and validate the Helm value with the same two choices
- document operator mappings and why endpoint and bucket remain separate
for routing and SigV4 signing

## Best-practice rationale

AWS documents both URL forms and favors virtual-hosted addressing for
S3, while compatibility endpoints such as the bundled MinIO deployment
can require path style. `rust-s3` defaults to virtual/subdomain
addressing and provides `with_path_style()` for the explicit
compatibility case.

Some providers buckets only support as virtual-hosted bucket styles.
This PR therefore uses one explicit, provider-neutral switch rather than
endpoint heuristics or fallback behavior, while retaining `path` as
Buzz's backward-compatible default.

Sources:
-
https://docs.aws.amazon.com/AmazonS3/latest/userguide/VirtualHosting.html
- https://docs.rs/rust-s3/0.37.0/s3/bucket/struct.Bucket.html
- https://docs.railway.com/storage-buckets#url-style
-
https://github.com/minio/minio/blob/master/docs/config/README.md#domain

## Validation

- `cargo fmt --all`
- `cargo check --workspace --all-targets`
- targeted `buzz-media` and `buzz-relay` parsing/client-construction
tests for defaults, strict errors, and both URL styles
- Helm unittest: 45/45 passed
- Compose config/render validation passed
- local MinIO path-mode relay startup passed the Git A3 conformance
probe and became ready
- unreachable object storage failed startup and readiness never opened
- push hooks completed the broader Rust and desktop suites successfully

---------

Signed-off-by: npub122y0pqkertljmedu303rl0aqrj3w8pvu43t6jxm6875lzg6f2pwqegc3xc <5288f082d91aff2de5bc8be23fbfa01ca2e3859cac57a91b7a3fa9f12349505c@buzz.block.builderlab.xyz>
Signed-off-by: Kalvin Chau <kalvin@block.xyz>
Co-authored-by: npub122y0pqkertljmedu303rl0aqrj3w8pvu43t6jxm6875lzg6f2pwqegc3xc <5288f082d91aff2de5bc8be23fbfa01ca2e3859cac57a91b7a3fa9f12349505c@buzz.block.builderlab.xyz>
2026-07-29 17:00:41 -07:00

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# Buzz production Docker Compose environment.
# Copy to .env and replace every CHANGE_ME value before running.
# The bootstrap script should generate this file for normal users.
# Image published by the public image pipeline. Use `:main` for pre-release testing. Pin `:sha-<7>` or a semver release tag for production.
BUZZ_IMAGE=ghcr.io/block/buzz:main
# Public host name. Used by compose.caddy.yml and URL-derived settings below.
BUZZ_DOMAIN=buzz.example.com
RELAY_URL=wss://buzz.example.com
BUZZ_MEDIA_BASE_URL=https://buzz.example.com/media
BUZZ_MEDIA_SERVER_DOMAIN=buzz.example.com
BUZZ_CORS_ORIGINS=https://buzz.example.com
# Production defaults. Closed relay mode requires RELAY_OWNER_PUBKEY and a stable relay key.
BUZZ_REQUIRE_AUTH_TOKEN=true
BUZZ_REQUIRE_RELAY_MEMBERSHIP=true
BUZZ_ALLOW_NIP_OA_AUTH=true
BUZZ_AUTO_MIGRATE=true
BUZZ_GIT_CONFORMANCE_PROBE=true
RUST_LOG=buzz_relay=info,buzz_db=info,buzz_auth=info,buzz_pubsub=info,tower_http=info
# Owner identity. Set to a 64-character hex Nostr pubkey.
RELAY_OWNER_PUBKEY=CHANGE_ME_OWNER_PUBKEY_HEX
# Stable secrets. Generate once, keep in .env, and back up securely.
BUZZ_RELAY_PRIVATE_KEY=CHANGE_ME_64_HEX_PRIVATE_KEY
BUZZ_GIT_HOOK_HMAC_SECRET=CHANGE_ME_RANDOM_64_HEX
POSTGRES_DB=buzz
POSTGRES_USER=buzz
POSTGRES_PASSWORD=CHANGE_ME_RANDOM_PASSWORD
REDIS_PASSWORD=CHANGE_ME_RANDOM_PASSWORD
BUZZ_S3_ACCESS_KEY=CHANGE_ME_RANDOM_ACCESS_KEY
BUZZ_S3_SECRET_KEY=CHANGE_ME_RANDOM_SECRET_KEY
BUZZ_S3_BUCKET=buzz-media
# Bundled MinIO uses path-style URLs; deploy/compose/compose.yml pins this.
BUZZ_S3_ADDRESSING_STYLE=path
# Optional host ports. Base compose publishes the relay directly on BUZZ_HTTP_PORT.
BUZZ_HTTP_PORT=3000
# Caddy host ports. Only used with compose.caddy.yml.
CADDY_HTTP_PORT=80
CADDY_HTTPS_PORT=443
# Dev override ports. Only used with compose.dev.yml.
POSTGRES_PORT=5432
REDIS_PORT=6379
MINIO_API_PORT=9000
MINIO_CONSOLE_PORT=9001
ADMINER_PORT=8082
PROMETHEUS_PORT=9090