### Summary
1. env 'MINIO_PORT' is used for MINIO external access, which shouldn't
be used in Go config.
2. After RAGFlow 1.0 release, MINIO_PORT will be used for docker compose
internal usage. new ENV MINIO_EXTERNAL_PORT will be used for external
access.
Signed-off-by: Jin Hai <haijin.chn@gmail.com>