@ #198 | getting started with nodejs docs

docs/nodejs_dev_guide.rst

@@ -1,10 +1,361 @@
 Node.js Development Guide
 =========================
 
-..  warning::
+Follow this guide to create https://github.com/teracyhq/hello-world-nodejs from scratch.
 
-    This page will be cleaned up by the next version of teracy-dev: v0.6.0
+Make sure that you have ``teracy-dev`` running, if not, follow the :doc:`getting_started` guide first.
 
-We're leveraging Docker workflow since v0.5.0 and this feature is not available.
+Make sure that you master the :doc:`basic_usage` guide first.
 
-This feature is available at http://dev.teracy.org/docs/0.4.2/nodejs_dev_guide.html
+Video
+-----
+
+Check out the video and follow step by step instructions below:
+
+.. raw:: html
+
+    <iframe width="100%" height="630" src="https://www.youtube.com/embed/2200zvxIdAs" frameborder="0" allowfullscreen></iframe>
+
+..  note::
+
+    The video is not really up to date with current teracy-dev v0.5.0, you will understand the
+    similar worlflow and the result, though.
+
+
+Enable proxy and add aliases domains
+------------------------------------
+
+To access your nodejs web app with the domain ``hello-d.teracy.dev`` (dev mode) and ``hello.teracy.dev``
+(prod mode), we need to enable the proxy container and domain aliases so that everything should be
+set up automatically under the hood for you.
+
+- Create ``vagrant_config_override.json`` file under ``~/teracy-dev`` directory with the following
+  content:
+
+  ..  code-block:: json
+
+      {
+        "provisioners": [{
+          "_id": "0",
+          "json": {
+            "teracy-dev": {
+              "proxy": {
+                "container": {
+                  "enabled": true
+                }
+              }
+            }
+          }
+        }],
+        "plugins": [{
+          "_id": "2",
+          "options": {
+            "aliases": ["hello-d.teracy.dev", "hello.teracy.dev"]
+          }
+        }]
+      }
+
+- Reload the VM:
+
+  ..  code-block:: bash
+
+      $ cd ~/teracy-dev
+      $ vagrant reload
+
+- Update the ``/etc/hosts`` file automatically with the following commands:
+
+  ..  code-block:: bash
+
+      $ cd ~/teracy-dev
+      $ vagrant hostmanager
+
+- Now open teracy.dev on your browser, it should display the following similar message:
+
+  ..  code-block:: bash
+
+      503 Service Temporarily Unavailable
+
+      nginx/1.11.9
+
+  so it works.
+
+
+Init the project
+----------------
+
+You're going to create `hello-world-nodejs` application, so let's create the app directory and init
+the app with `$ npm init`.
+
+
+- Create the ``hello-world-nodejs`` directory under ``~/teracy-dev/workspace`` by opening a host
+  terminal window and execute the following commands:
+
+  ..  code-block:: bash
+
+      $ cd ~/teracy-dev/workspace
+      $ mkdir hello-world-nodejs
+
+- Use the `node:6.9` Docker image to run ``$ npm init`` by ``ssh`` into the VM and execute the
+  following commands:
+
+  ..  code-block:: bash
+
+      $ vagrant ssh
+      $ ws
+      $ cd hello-world-nodejs
+      $ docker container run -it --rm -v $(pwd):/opt/hello-world-nodejs -w /opt/hello-world-nodejs node:6.9 /bin/bash
+
+  You should be presented with the container bash session as: ``root@85fe561:/opt/hello-world-nodejs#``
+
+- ``# npm init`` and fill in the content as below:
+
+  ..  code-block:: bash
+
+      root@85fe561:/opt/hello-world-nodejs# npm init
+      npm info it worked if it ends with ok
+      npm info using npm@3.10.10
+      npm info using node@v6.9.5
+      This utility will walk you through creating a package.json file.
+      It only covers the most common items, and tries to guess sensible defaults.
+
+      See `npm help json` for definitive documentation on these fields
+      and exactly what they do.
+
+      Use `npm install <pkg> --save` afterwards to install a package and
+      save it as a dependency in the package.json file.
+
+      Press ^C at any time to quit.
+      name: (hello-world-nodejs)
+      version: (1.0.0) 0.1.0-SNAPSHOT
+      description: hello-world-nodejs
+      entry point: (index.js)
+      test command:
+      git repository:
+      keywords:
+      author: Teracy
+      license: (ISC) MIT
+      About to write to /opt/hello-world-nodejs/package.json:
+
+      {
+        "name": "hello-world-nodejs",
+        "version": "0.1.0-SNAPSHOT",
+        "description": "hello-world-nodejs",
+        "main": "index.js",
+        "scripts": {
+          "test": "echo \"Error: no test specified\" && exit 1"
+        },
+        "author": "Teracy",
+        "license": "MIT"
+      }
+
+      Is this ok? (yes) yes
+      npm info init written successfully
+      npm info ok
+      root@85fe561:/opt/hello-world-nodejs#
+
+- You need to sync the generated files from the VM machine to the host machine by opening a host
+  terminal window and type:
+
+  ..  code-block:: bash
+
+      $ cd teracy-dev
+      $ vagrant rsync-back
+
+  After that, you should see the ``package.json`` file under the 
+  ``~/teracy-dev/workspace/hello-world-nodejs`` directory on the host machine.
+
+
+The output should be something like this:
+https://github.com/teracyhq/hello-world-nodejs/commit/72ffde127e5935c70b9022ccdf107c2c9d4c6048
+
+
+Install dependencies
+--------------------
+
+We're going to use ``express`` for the web app construction and ``nodemon`` for development
+convenience.
+
+- Continue run the following commands within the container session:
+
+  ..  code-block:: bash
+
+      root@85fe561:/opt/hello-world-nodejs# npm install express --save
+      root@85fe561:/opt/hello-world-nodejs# npm install nodemon --save-dev
+
+- And similarly, you need to sync the generated files from the VM machine to the host machine by
+  opening a host terminal window and type:
+
+  ..  code-block:: bash
+
+      $ cd teracy-dev
+      $ vagrant rsync-back
+
+  After that, you should see the updated ``package.json`` file.
+
+The output should be something like this:
+https://github.com/teracyhq/hello-world-nodejs/commit/82f357675e426f4af076a4608cc43a364edfb7af
+
+
+Add app.js and update package.json's scripts
+--------------------------------------------
+
+- Create ``app.js`` file within ``hello-world-nodejs`` directory with the following content:
+
+  ..  code-block:: javascript
+
+      var express = require('express');
+      var app = express();
+
+      app.get('/', function (req, res) {
+        res.send('Hello World!');
+      });
+
+      var port = process.env.PORT || 3000;
+      app.listen(port, function () {
+        console.log('app listening on port ' + port);
+      });
+
+- Update the ``scripts`` section on the ``package.json`` file:
+
+  ..  code-block:: json
+
+      "scripts": {
+        "start": "node app.js",
+        "start:dev": "nodemon app.js",
+        "test": "echo \"Error: no test specified\" && exit 1"
+      }
+
+The output should be something like this:
+https://github.com/teracyhq/hello-world-nodejs/commit/eb33e42f8544ee8f59535b44b6416630d911b06f
+
+
+Add Docker files
+----------------
+
+We need to add:
+  - ``Dockerfile-dev`` and ``docker-compose.yml`` files for dev mode
+  - ``Dockerfile`` and ``docker-compose.prod.yml`` for prod mode
+
+
+- Create ``Dockerfile-dev`` file within ``hello-world-nodejs`` directory with the following content:
+
+  ..  code-block:: docker
+
+      FROM node:6.9
+
+      ENV APP=/opt/app
+
+      RUN mkdir -p $APP
+
+      ADD package.json $APP/
+
+      WORKDIR $APP
+
+      RUN npm install
+
+      VOLUME $APP/node_modules
+
+- Create ``docker-compose.yml`` file within ``hello-world-nodejs`` directory with the following
+  content:
+
+  ..  code-block:: yaml
+
+      version: '2'
+
+      services:
+        dev:
+          build:
+            context: .
+            dockerfile: Dockerfile-dev
+          image: teracy/hello-world-nodejs:dev_develop
+          command: bash -c "npm run start:dev"
+          volumes:
+            - .:/opt/app
+          ports:
+            - 3000
+          restart: always
+          # nginx-proxy
+          environment:
+            - VIRTUAL_HOST=hello-d.teracy.dev
+          # to get this work with https://github.com/jwilder/nginx-proxy
+          # related: https://github.com/jwilder/nginx-proxy/issues/305
+          network_mode: bridge
+
+- Create ``Dockerfile`` file within ``hello-world-nodejs`` directory with the following content:
+
+  ..  code-block:: docker
+
+      FROM node:6.9
+
+      ENV APP=/opt/app NODE_ENV=production
+
+      RUN mkdir -p $APP
+
+      ADD . $APP/
+
+      WORKDIR $APP
+
+      RUN npm install --production
+
+      CMD npm run start
+
+- Create ``docker-compose.prod.yml`` file within ``hello-world-nodejs`` directory with the following
+  content:
+
+  ..  code-block:: yaml
+
+      version: '2'
+
+      services:
+        prod:
+          build:
+            context: .
+            dockerfile: Dockerfile
+          image: teracy/hello-world-nodejs:develop
+          ports:
+            - 3000
+          restart: always
+          # nginx-proxy
+          environment:
+            - VIRTUAL_HOST=hello.teracy.dev
+          # to get this work with https://github.com/jwilder/nginx-proxy
+          # related: https://github.com/jwilder/nginx-proxy/issues/305
+          network_mode: bridge
+
+
+The output should be something like this:
+https://github.com/teracyhq/hello-world-nodejs/commit/e1d708c0e0192ca1dad8ba4225d3766ac310b02c
+
+
+Run on dev mode
+---------------
+
+Open a new terminal window, `ssh` into the teracy-dev VM to execute the following commands:
+
+..  code-block:: bash
+
+    $ vagrant ssh
+    $ ws
+    $ cd hello-world-nodejs
+    $ docker-compose up -d
+
+
+After that, open hello-d.teracy.dev on your browser to see the app on the dev mode.
+
+Run on prod mode
+----------------
+
+Open a new terminal window,, `ssh` into the teracy-dev VM to execute the following commands:
+
+..  code-block:: bash
+
+    $ vagrant ssh
+    $ ws
+    $ cd hello-world-nodejs
+    $ docker-compose -f docker-compose.prod.yml up -d
+
+
+After that, open hello.teracy.dev on your browser to see the app on the prod mode.
+
+Congratulations, you've created a basic example for a hello world nodejs app with Docker workflow running
+on ``teracy-dev``.