Add more illustrations about using the local disk as the backend (#62)

* add docker-compose.local.yml

add an example yml file for using local storage as a backend

Signed-off-by: Hongyu Li <543306408@qq.com>

* add the illustration of using local disk as backend

Signed-off-by: Hongyu Li <543306408@qq.com>

---------

Signed-off-by: Hongyu Li <543306408@qq.com>

README.md

@@ -86,6 +86,16 @@ cargo run -- \
   --bucket foobar
 ```
 
+If you just need to use the local disk as the backend, use the following bash.
+
+```bash
+# Change this to the output of `openssl rand -hex 32`.
+export RUDOLFS_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+
+
+cargo run -- --port 8080 local --path=/data
+```
+
 **Note**: Always use a different S3 bucket, cache directory, and encryption key
 than what you use in your production environment.
 
@@ -119,6 +129,12 @@ To run in a production environment, it is easiest to use `docker-compose`:
 
     ```bash
     docker-compose up -d
+
+    # use minio yml
+    docker-compose -f ./docker-compose.minio.yml up -d
+
+    # use local disk yml
+    docker-compose -f ./docker-compose.local.yml up -d
     ```
 
  3. **[Optional]**: It is best to use nginx as a reverse proxy for this server.

docker-compose.local.yml

@@ -0,0 +1,48 @@
+# Copy this file to another location and modify as necessary.
+version: '3'
+services:
+  app:
+    image: jasonwhite0/rudolfs:latest
+    #build:
+    #  context: .
+    #  dockerfile: Dockerfile
+    ports:
+      - "8081:8080"
+    volumes:
+      - data:/data
+    restart: always
+    environment:
+      - AWS_ACCESS_KEY_ID
+      - AWS_SECRET_ACCESS_KEY
+      - AWS_DEFAULT_REGION
+      - LFS_ENCRYPTION_KEY
+      - LFS_S3_BUCKET
+      - LFS_MAX_CACHE_SIZE
+    entrypoint:
+      - /tini
+      - --
+      - /rudolfs
+      - --cache-dir
+      - /data
+      - --key
+      - ${LFS_ENCRYPTION_KEY}
+      - --port
+      - "8080"
+      - local
+      - --path=/data
+
+  # A real production server should use nginx. How to configure this depends on
+  # your needs. Use your Google-search skills to configure this correctly.
+  #
+  # nginx:
+  #   image: nginx:stable
+  #   ports:
+  #     - 80:80
+  #     - 443:443
+  #   volumes:
+  #     - ./nginx.conf:/etc/nginx/nginx.conf
+  #     - ./nginx/errors.log:/etc/nginx/errors.log
+
+
+volumes:
+  data: