docs: add documentation about compilation (#138)

提供自编译可执行 JAR 和 Docker 镜像的文档。

Fixes https://github.com/halo-dev/docs/issues/114

/kind documentation

```release-note
None
```

sidebars.js

@@ -83,6 +83,7 @@ module.exports = {
             // "developer-guide/core/structure",
             "developer-guide/core/prepare",
             "developer-guide/core/run",
+            "developer-guide/core/build",
             // "developer-guide/core/code-style",
           ],
         },