Docker compose error
## Context
`cd docker && cp .env.example .env && docker compose up` fails: the jawn/valhalla build context in docker-compose.yml doesn't match the repo's directory layout (missing `shared` directory context), plus unset MINIO env vars.
## Verified resolution
Community workaround (koshyviv): in `./docker/docker-compose.yml` change the jawn build context to `..` with `dockerfile: valhalla/dockerfile`, and in `./valhalla/dockerfile` build with the parent directory as context (COPY ./valhalla/jawn/... and ./shared ... with the corrected paths). Maintainer chitalian confirmed and linked PR #3195 as the repo-side fix.