preparing docker

.dockerignore

@@ -0,0 +1,6 @@
+node_modules
+npm-debug.log
+docs
+mysql.txt
+test.js
+mysql

Dockerfile

@@ -0,0 +1,15 @@
+FROM node:8
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+CMD npm start
+EXPOSE 8055
+
+#
+FROM mysql
+
+ENV MYSQL_DATABASE iot
+ENV MYSQL_ROOT_PASSWORD mitko2021
+
+COPY schema.sql /docker-entrypoint-initdb.d/

docker-compose.yml

@@ -0,0 +1,18 @@
+version: '3.3'
+
+services:
+    node-app:
+        build: .
+        environment:
+            - DATABASE_HOST=db
+        depends_on:
+            - db
+        restart: always
+        ports:
+            - 8055:8055
+    db:
+        build: ./mysql
+        restart: always
+        environment:
+            MYSQL_ROOT_PASSWORD: mitko2021
+            MYSQL_DATABASE: iot

package.json

@@ -4,7 +4,8 @@
   "description": " test api for IOT devices",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "dev": "nodemon dht.js",
+    "start": "node dht.js"
   },
   "repository": {
     "type": "git",

src/db/devicemessages.js

@@ -12,10 +12,10 @@ const config = require(__dirname + '/../../config/config.json')[env];
 
 var pool  = mysql.createPool({
   connectionLimit : 20,
-  host     : config.host,
-  user     : config.username,
-  password : config.password,
-  database : config.database
+  host     : process.env.DATABASE_HOST ||  config.host ||  '127.0.0.1',
+  user     : process.env.DATABASE_USER || config.username,
+  password : process.env.DATABASE_PASS || config.password,
+  database : process.env.DATABASE_DB   || config.database
 });
 // var con = mysql.createConnection({
 //   host     : 'localhost',