fix(#718): Installation documentation for using One Platform (#728)

* fix(#718): Added README and Lerna in scripts

* fix(#718): Added platform.js to copy all the .env.example files to .env file

* fix(#718): Added script to post-install

README.md

@@ -14,12 +14,38 @@ An integrated application hosting platform which allows you to host your SPAs. I
 - Notifications Framework
 - Feedback Framework
 
-## Install
+### Prerequisites
 
+- Docker [Download](https://www.docker.com/get-started)
+
+## Installation
+
+### Install node_modules for all the packages
+#### PS: The below script also copies `.env.example` to `.env` for all the services
 ```sh
 npm install
-# OR
-lerna bootstrap
+```
+
+### Environment Config
+
+Copy all the `.env.example` to `.env` and add the following fields
+
+- For SPAs (packages ending with *-spa)
+    1. Add API_URL and set the url to .env
+
+- For services (packages ending with *-service)
+    1. Add database path in DB_PATH
+    2. Add database name in DB_NAME
+    3. Add database username in DB_USER
+    4. Add database password in DB_PASSWORD
+
+#### Example
+```properties
+## Database
+DB_PATH=localhost
+DB_NAME=platform
+DB_USER=admin
+DB_PASSWORD=admin
 ```
 
 ## Using docker-compose for local development

package.json

@@ -36,9 +36,11 @@
   },
   "homepage": "https://github.com/1-Platform/one-platform#readme",
   "scripts": {
+    "lerna": "lerna",
     "test": "echo \"Error: no test specified\" && exit 1",
     "cli-microservice": "sh cli-init.sh",
-    "deploy": "sh deploy.sh"
+    "deploy": "sh deploy.sh",
+    "postinstall": "npm run lerna bootstrap && node platform.js"
   },
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "4.3.0",

platform.js

@@ -0,0 +1,14 @@
+console.log( 'Copying .env.example to .env for the services: Started' );
+const fs = require( 'fs' );
+const path = require( 'path' );
+const { COPYFILE_EXCL } = fs.constants;
+const dir = 'packages';
+fs.readdir( dir, (err, list) => {
+    const services = list.filter( folder => folder.endsWith( '-service' ) );
+    services.forEach(service => {
+        const pathToEnv = dir + '/' + service + '/';
+        fs.copyFile( pathToEnv + '.env.example', pathToEnv + '.env', COPYFILE_EXCL, ( error ) => error );
+        path.dirname( service );
+    })
+} );
+console.log( 'Copying .env.example to .env for the services: Completed' );