doc: Add more detailed description regarding how to build an image of…

… Higress Gateway (#217)

i18n/en-us/docusaurus-plugin-content-docs/current/dev/architecture.md

@@ -15,9 +15,27 @@ To compile the binary that can run in the local environment, execute `make build
 
 If need to compile the Docker image, please execute `make docker-build` .
 
-
 ## Higress Gateway
 
 The Higress gateway is a data plane that implements gateway routing and forwarding capabilities.
 
-Executing `make build-gateway` in the higress repository directory will compile the Higress Gateway image.
+### Quick Build
+
+Suitable scenario: Envoy itself isn't modified, meaning there is no need to rebuild the envoy binary.
+
+Steps:
+1. Enter the higress repo in the terminal.
+2. Execute `make build-gateway-local` to start building the image of Higress Gateway.
+3. The image tag will be displayed in the terminal after the build finishes.
+
+### Full Build
+
+Suitable scenario: The envoy binary needs to be rebuilt.
+
+Steps:
+1. Enter the higress repo in the terminal.
+2. Execute `cd external/proxy; BUILD_WITH_CONTAINER=1 make test_release` to build the envoy binary.
+3. Once the build finishes, the built artifact, envoy.tar.gz, will be placed in the `external/package` folder in the higress repo.
+4. Rename the `envoy.tar.gz` to `envoy-amd64.tar.gz` or `envoy-arm64.tar.gz`, based on your local architecture.
+5. If you want to build a multi-arch image, please re-do step 2 and 3 with another architecture, and copy the renamed built artifact here.
+6. Follow the steps mentioned above in the "Quick Build" section to build an Higress Gateway image.

i18n/zh-cn/docusaurus-plugin-content-docs/current/dev/architecture.md

@@ -14,9 +14,27 @@ Higress 的控制面程序，会连接 Istio ，用于生成 Istio API 对象，
 
 若需要编译 docker 镜像，请执行 `make docker-build`。Higress Controller使用的Istio pilot镜像使用`make build-istio-local` 编译。
 
-
 ## Higress Gateway
 
 Higress 的数据面程序，用于实现网关路由转发等能力。
 
-在 higress 仓库目录下执行 `make build-gateway-local` 会编译出 Higress Gateway 的镜像。
+### 快速构建
+
+适用场景：未对 Envoy 本体进行了修改，即不需要重新编译 Envoy 本体的情况
+
+构建步骤：
+1. 在命令行下进入 higress 仓库目录；
+2. 执行 `make build-gateway-local` 命令，进行 Higress Gateway 镜像的构建；
+3. 构建完成后会输出镜像 tag。
+
+### 完整构建
+
+适用场景：需要重新编译 Envoy 本体的情况
+
+构建步骤：
+1. 在命令行下进入 higress 仓库目录；
+2. 执行 `cd external/proxy; BUILD_WITH_CONTAINER=1 make test_release` 命令，构建 Envoy 本体；
+3. 构建完成后，生成的 `envoy.tar.gz` 文件会放在 higress 仓库目录的 `external/package` 子目录内；
+4. 将构建完成后输出的 `envoy.tar.gz` 文件，根据本机的系统架构重命名为 `envoy-amd64.tar.gz` 或 `envoy-arm64.tar.gz`；
+5. 如果需要构建多平台镜像，那么需要在另一个平台的系统上完成 Envoy 的构建，并将其生成的 envoy.tar.gz 文件重命名后复制到本机上（参考以上 2、3 两步）；
+6. 参考上面的快速构建步骤，构建 Higress Gateway 镜像。