Is there a way to Dockerize my MySQL DB with express and host that container on digital ocean .. etc? - mysql

Question

I want to use Docker to make a container that contains a MySQL DB with Express to expose into certain ports for example 8080 so I can fetch that using React for the view.
Right now I made simple server with express that fetches the data from a MySQL database and displays it on 'localhost:8000/posts' (posts is where i am using SQL Query to select everything from the table.
This is a index.ts file:
//Main File
import express from "express";
import { connection } from "./db-connect";
const app = express();
const port = 8000;
var cors = require("cors");
/*
cors was installed so I could get the data
and display it to react, otherwise I was getting an error
in the console.
*/
app.use(cors());
app.listen(80, function() {
console.log("CORS-enabled web server listening on port 80");
});
app.get("/", (req, res) => {
res.send("Go to /posts to see the Data");
});
app.get("/posts", (req, res) => {
connection.query("SELECT * FROM blog.posts", (err, result) => {
if (err) {
return res.send(err);
} else {
return res.json(result);
}
});
});
app.listen(port, err => {
if (err) {
return console.error(err);
}
return console.log(`server is listening on ${port}`);
});
So I have a database named blog with table called posts
With this I am getting an array with data as an object which is I wanted.
What I wanted to learn is Dockerize this into a container. With MySQL that has blog database with posts table that contains id, title, body and user.
After I'd like to host the Docker that contains the db and deploy it to digitalocean or similar service.

Answer 1

I'd suggest to use docker-compose for this.
You'd then have a .yml file that looks something like this:
version: '3.3'
services:
db:
image: mysql:5.7
restart: always
environment:
# Use this to connect to your dockerized mysql container
MYSQL_DATABASE: 'db'
MYSQL_USER: 'user'
MYSQL_PASSWORD: 'password'
MYSQL_ROOT_PASSWORD: 'password'
ports:
- '3306:3306'
expose:
# Use this port in your express app
- '3306'
volumes:
- my-db:/var/lib/mysql
volumes:
my-db:
Then you need to dockerize your express app and include it in the docker-compose.yml file. Here is a guide on how to dockerize a node.js app such as yours.
Once you succeeded to connect the two containers in docker-compose, deploying it on a Digital Ocean server is just as easy as installing Docker-Compose on the server (if it's not already installed), copying your code to the server and running docker-compose up --build.