Updated .env and Docker README (#3295)

### What problem does this PR solve?


### Type of change


- [x] Documentation Update

docker/.env

@@ -1,75 +1,95 @@
-# Version of Elastic products
+# The version of Elasticsearch.
 STACK_VERSION=8.11.3
 
-# Port to expose Elasticsearch HTTP API to the host
+# The port used to expose the Elasticsearch service to the host machine, 
+# allowing EXTERNAL access to the service running inside the Docker container.
 ES_PORT=1200
 
-# Set the Elasticsearch password
+# The password for Elasticsearch. 
+# When updated, you must revise the `es.password` entry in  service_conf.yaml accordingly.
 ELASTIC_PASSWORD=infini_rag_flow
 
-# Port to expose Kibana to the host
+# The port used to expose the Kibana service to the host machine, 
+# allowing EXTERNAL access to the service running inside the Docker container.
 KIBANA_PORT=6601
 KIBANA_USER=rag_flow
 KIBANA_PASSWORD=infini_rag_flow
 
-# Update according to the available host memory (in bytes)
-
+# The maximum amount of the memory, in bytes, that a specific Docker container can use while running.
+# Update it according to the available memory in the host machine.
 MEM_LIMIT=8073741824
 
+# The password for MySQL. 
+# When updated, you must revise the `mysql.password` entry in service_conf.yaml.
 MYSQL_PASSWORD=infini_rag_flow
+# The port used to expose the MySQL service to the host machine, 
+# allowing EXTERNAL access to the MySQL database running inside the Docker container. 
 MYSQL_PORT=5455
 
-# Port to expose minio to the host
+# The port used to expose the MinIO console interface to the host machine, 
+# allowing EXTERNAL access to the web-based console running inside the Docker container. 
 MINIO_CONSOLE_PORT=9001
+# The port used to expose the MinIO API service to the host machine, 
+# allowing EXTERNAL access to the MinIO object storage service running inside the Docker container. 
 MINIO_PORT=9000
-
+# The username for MinIO. 
+# When updated, you must revise the `minio.user` entry in service_conf.yaml accordingly.
 MINIO_USER=rag_flow
+# The password for MinIO. 
+# When updated, you must revise the `minio.password` entry in service_conf.yaml accordingly.
 MINIO_PASSWORD=infini_rag_flow
 
+# The port used to expose the Redis service to the host machine, 
+# allowing EXTERNAL access to the Redis service running inside the Docker container.
 REDIS_PORT=6379
+# The password for Redis.
+# When updated, you must revise the `redis.password` entry in service_conf.yaml accordingly.
 REDIS_PASSWORD=infini_rag_flow
 
+# The port used to expose RAGFlow's HTTP API service to the host machine, 
+# allowing EXTERNAL access to the service running inside the Docker container.
 SVR_HTTP_PORT=9380
 
-# the Docker image for the slim version
+# The RAGFlow Docker image to download.
+# Defaults to the dev-slim edition.
 RAGFLOW_IMAGE=infiniflow/ragflow:dev-slim
-
-# If you cannot download the RAGFlow Docker image, try uncommenting either of the following hub.docker.com mirrors:
-# RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:dev-slim
-# RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:dev-slim
-
-# To download the RAGFlow Docker image with embedding models, modify the line above as follows:
+#
+# To download the RAGFlow Docker image with embedding models, uncomment the following line instead:
+# 
+# This Docker image includes:
+# - Embedded embedding models:
+#   - BAAI/bge-large-zh-v1.5
+#   - BAAI/bge-reranker-v2-m3
+#   - maidalun1020/bce-embedding-base_v1
+#   - maidalun1020/bce-reranker-base_v1
+# - Embedding models that will be downloaded once you select them in the RAGFlow UI:
+#   - BAAI/bge-base-en-v1.5
+#   - BAAI/bge-large-en-v1.5
+#   - BAAI/bge-small-en-v1.5
+#   - BAAI/bge-small-zh-v1.5
+#   - jinaai/jina-embeddings-v2-base-en
+#   - jinaai/jina-embeddings-v2-small-en
+#   - nomic-ai/nomic-embed-text-v1.5
+#   - sentence-transformers/all-MiniLM-L6-v2
+#
 # RAGFLOW_IMAGE=infiniflow/ragflow:dev
 
-# This Docker image includes the following four models:
-# - BAAI/bge-large-zh-v1.5
-# - BAAI/bge-reranker-v2-m3
-# - maidalun1020/bce-embedding-base_v1
-# - maidalun1020/bce-reranker-base_v1
 
-# And the following models will be downloaded if you select them in the RAGFlow UI.
-# - BAAI/bge-base-en-v1.5
-# - BAAI/bge-large-en-v1.5
-# - BAAI/bge-small-en-v1.5
-# - BAAI/bge-small-zh-v1.5
-# - jinaai/jina-embeddings-v2-base-en
-# - jinaai/jina-embeddings-v2-small-en
-# - nomic-ai/nomic-embed-text-v1.5
-# - sentence-transformers/all-MiniLM-L6-v2
-
-# If you cannot download the RAGFlow Docker image, try uncommenting either of the following hub.docker.com mirrors:
+# If you cannot download the RAGFlow Docker image:
+#
+# - For the `dev-slim` edition, uncomment either of the following:
+# RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:dev-slim
+# RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:dev-slim
+#
+# - For the `dev-slim` edition, uncomment either of the following:
 # RAGFLOW_IMAGE=swr.cn-north-4.myhuaweicloud.com/infiniflow/ragflow:dev
 # RAGFLOW_IMAGE=registry.cn-hangzhou.aliyuncs.com/infiniflow/ragflow:dev
 
+
+# The local time zone.
 TIMEZONE='Asia/Shanghai'
 
-# If you cannot download the RAGFlow Docker image, try uncommenting the following huggingface.co mirror:
+# Uncomment the following line if you have limited access to huggingface.co:
 # HF_ENDPOINT=https://hf-mirror.com
 
-######## OS setup for ES ###########
-# sysctl vm.max_map_count
-# sudo sysctl -w vm.max_map_count=262144
-# Note that this change is not permanent and will be reset after a system reboot.
-# To make your change permanent, update /etc/sysctl.conf by:
-# Adding or modifying the following line:
-# vm.max_map_count=262144
+