The PUT was always sent to 127.0.0.1, which is nothing inside the container, so
uploads failed whenever the web player did not run on the same host as
SeaweedFS. Take an optional S3_UPLOAD_ENDPOINT instead (the compose stacks
point it at seaweedfs:8333) and fall back to the host in the presigned URL. The
signed Host header is preserved either way, so the signature still matches.
Updates the compose build context, the Dockerfile header, the package
name and the docs. The compose service and container keep the name
frontend/musify-frontend, since nginx routes to http://frontend:3000.
The source files also carry the first prettier pass, so the rename and
the reformat land together for them.
Admin