docs(docker): fix build fail (#45)

Co-authored-by: MegEngine <megengine@megvii.com>

Author: tpoisonooo

Dockerfile.github-release

@@ -1,15 +1,38 @@
 FROM megflow:latest as stage
-ARG PY_VERSION
 
 # build .whl
-RUN eval "$(conda shell.bash hook)" && conda activate py${PY_VERSION} \
+RUN eval "$(conda shell.bash hook)" && conda activate py3.6 \
+    && cargo build --release \
+    && cargo build --example megflow_run --release \
+    && cp target/release/examples/megflow_run flow-python/megflow/megflow_run_inner  \
+    && cp target/release/megflow_quickstart flow-python/megflow/megflow_quickstart_inner  \
+    && cd flow-python \
+    && python3 setup.py bdist_wheel -p linux-x86_64 -d ../dist
+
+RUN eval "$(conda shell.bash hook)" && conda activate py3.7 \
     && cargo build --release \
     && cargo build --example megflow_run \
     && cp target/release/examples/megflow_run flow-python/megflow/megflow_run_inner  \
     && cp target/release/megflow_quickstart flow-python/megflow/megflow_quickstart_inner  \
     && cd flow-python \
     && python3 setup.py bdist_wheel -p linux-x86_64 -d ../dist
 
+RUN eval "$(conda shell.bash hook)" && conda activate py3.8 \
+    && cargo build --release \
+    && cargo build --example megflow_run  --release \
+    && cp target/release/examples/megflow_run flow-python/megflow/megflow_run_inner  \
+    && cp target/release/megflow_quickstart flow-python/megflow/megflow_quickstart_inner  \
+    && cd flow-python \
+    && python3 setup.py bdist_wheel -p linux-x86_64 -d ../dist
+
+RUN eval "$(conda shell.bash hook)" && conda activate py3.9 \
+    && cargo build --release \
+    && cargo build --example megflow_run  --release \
+    && cp target/release/examples/megflow_run flow-python/megflow/megflow_run_inner  \
+    && cp target/release/megflow_quickstart flow-python/megflow/megflow_quickstart_inner  \
+    && cd flow-python \
+    && python3 setup.py bdist_wheel -p linux-x86_64 -d ../dist
+
 # copy back to host
 FROM scratch AS export-stage
 COPY --from=stage /megflow-runspace/dist/ .

docs/how-to-add-my-service/01-quickstart.zh.md

@@ -91,6 +91,13 @@ custom
 * 分支名称
 * 如有 placeholder，应该替换成什么
 
+placeholder 使用的正则匹配是 
+```bash
+$ cat flow-quickstart/main.rs
+...
+    let re = Regex::new(r"##[_\-a-zA-Z0-9]*##").unwrap();
+...
+```
 
 ## MegFlow 服务使用方式
 

docs/how-to-pack-python-whl.zh.md

@@ -13,9 +13,9 @@ $ # 构造开发环境，安装依赖。已执行过 docker 编译可以跳过
 $ docker build -t megflow -f Dockerfile.github-dev .
 $ # 创建结果目录
 $ mkdir dist
-$ # docker 打包  whl
+$ # docker 打包  3.6~3.9 版本 whl
 $ # https://stackoverflow.com/questions/33377022/how-to-copy-files-from-dockerfile-to-host
-$ DOCKER_BUILDKIT=1 docker build --build-arg PY_VERSION=3.8 -f Dockerfile.github-release --output dist .
+$ DOCKER_BUILDKIT=1 docker build -f Dockerfile.github-release --output dist .
 ```
 
 **注意** COPY to host 需要：