add files for code and learn at COSCon 2019 (#99)

Author: joyeecheung

archive/shanghai-2019/Dockerfile

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+FROM ubuntu:bionic
+
+# Install tools
+RUN apt-get update
+RUN apt-get install -y build-essential python ninja-build vim git sudo
+
+# Expose ports used by net tests
+ENV NODE_COMMON_PORT=12346
+EXPOSE 12346
+# debug port used by v8 debugger
+EXPOSE 5858
+# debug port used by v8 insepctor
+EXPOSE 9229
+
+# Set up user node-dev: the tests fail when run by the root
+RUN adduser --disabled-password --gecos '' node-dev
+RUN adduser node-dev sudo
+RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+USER node-dev
+WORKDIR /home/node-dev
+ENV HOME /home/node-dev
+
+# Clone the code and build
+RUN git clone --depth=1 https://github.com/nodejs/node.git
+WORKDIR /home/node-dev/node
+RUN python2 ./configure --ninja
+ENV BUILD_WITH ninja
+RUN make -j2 test

archive/shanghai-2019/README.md

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+# Node.js Code + Learn @ COSCon 2019
+
+- [事前准备 (praparation)](./preparation.md)
+- [Dockerfile](./Dockerfile)
+- [Slides](https://docs.google.com/presentation/d/1NluODLOelMFyui10jSLY8T4M0F444LaG7Ir5u_tfOGM/edit?usp=sharing)

archive/shanghai-2019/preparation.md

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+# 事前准备
+
+## 安装环境
+
+### MacOS
+
+1. 从 App Store 安装 Xcode
+2. 从命令行运行
+
+  ```
+  xcode-select --install
+  ```
+3. 推荐安装 ninja。如使用 homebrew：
+
+   ```
+   brew install ninja
+   ```
+
+### Ubuntu
+
+```
+apt-get update
+apt-get install -y build-essential python ninja-build make g++
+```
+
+### 其他环境
+
+UNIX: https://github.com/nodejs/node/blob/master/BUILDING.md#unix-prerequisites
+Windows: https://github.com/nodejs/node/blob/master/BUILDING.md#prerequisites
+
+## 构建与测试
+
+全部环境：推荐先 clone Node.js core 的代码。因为体积较大，建议用 `--depth=1`：
+
+```
+git clone --depth=1 https://github.com/nodejs/node.git
+```
+
+推荐在参加前先编译（需耗时半个小时到一个小时）和运行一遍测试（会从 npm 下载一些渲染 API 文档需要的包）。MacOS 和 Linux：
+
+```
+cd node
+
+# 如果有安装 ninja
+python2 ./configure --ninja
+BUILD_WITH=ninja make -j2 test
+
+# 如果没有安装 ninja
+python2 ./configure
+make -j2 test
+```
+
+其中 -j2 的 2 可以替换成机器上的 CPU 逻辑核心数。