more readme thing

README.md

@@ -5,19 +5,41 @@
 
 Official docker images for [MCDReforged](https://github.com/Fallen-Breath/MCDReforged)
 
-## Images
+## Usages
+
+### Quick start
+
+Quick test if the docker and image works
 
-Runtime environment:
-- User: root
-- Working directory: `/mcdr`
+```bash
+docker run -it --rm mcdreforged/mcdreforged
+```
+
+### Persist your server data
+
+For a production usage, you need to persist the working directory: `/mcdr`,
+where all MCDR related files and the server folder is in
+
+```bash
+docker run --name my_mcdr -v /path/to/my/server:/mcdr mcdreforged/mcdreforged
+```
+
+### Python package installation
 
 If you want to installed custom python packages, you can:
 
-1. Mount path `/root/.local/lib/python${PYTHON_VERSION}/site-packages/` to a volume or a local directory, 
-   where `PYTHON_VERSION` is the major + minor version of the python interpreter, e.g. `3.11`
-2. Use `pip3` to install packages you want
+1. Mount path `/root/.local/lib/python${PYTHON_VERSION}/site-packages/` to a volume or a local directory 
+    - `PYTHON_VERSION` is the major + minor version of the python interpreter, e.g. `3.11`
+    - This step is optional. Installing without the directory mounted results in the loss of the new packages when the container is removed
+2. Use `pip3` to install whatever packages you want like usual. The `--user` argument is set automatically globally
+
+   ```bash
+   $ docker exec -it my_mcdr pip3 install requests
+   ```
+
+## Images
 
-### Base Image
+### Base
 
 [![Docker](https://img.shields.io/docker/v/mcdreforged/mcdreforged/latest)](https://hub.docker.com/r/mcdreforged/mcdreforged)
 
@@ -34,9 +56,11 @@ mcdreforged/mcdreforged:2.13.0-py3.11
 mcdreforged/mcdreforged:2.13.0-py3.11-slim
 ```
 
-### Image with extra packages
+### Extra
+
+Image with extra python packages
 
-Extra packages are collected from the [Plugin Catalogue](https://github.com/MCDReforged/PluginCatalogue),
+Theses extra packages are collected from the [Plugin Catalogue](https://github.com/MCDReforged/PluginCatalogue),
 covering almost all required packages of the plugins in the catalogue
 
 ```bash
@@ -48,18 +72,22 @@ mcdreforged/mcdreforged-extra:2.13.0-py3.11
 mcdreforged/mcdreforged-extra:2.13.0-py3.11-slim
 ```
 
-### Image with OpenJDK
+### OpenJDK
 
-Supported openjdk distributions:
+Images with OpenJDK installed
+
+Supported OpenJDK distributions:
 
 - [corretoo](https://aws.amazon.com/corretto/)
 - [liberica](https://bell-sw.com/libericajdk/)
 - [temurin](https://adoptium.net/temurin/)
 - [zulu](https://www.azul.com/downloads/?package=jdk#zulu)
 
+Supported java version: 8, 11, 17, 21
+
 Default JDK version: 17
 
-`-extra` suffix means with extra packages
+`-extra` suffix means with [extra](#extra) packages
 
 ```bash
 mcdreforged/mcdreforged-temurin:latest