To install Docker on Ubuntu, in the terminal window enter the command


$ sudo apt install

The Docker service needs to be setup to run at startup


$ sudo systemctl start docker

$ sudo systemctl enable docker

To verify the installed Docker version number

$ docker –version

Alternative: Install Docker from Official Repository

Download Dependencies

 Docker mysql :

$ docker run –name=test-mysql mysql

Run –>for run the container

–name –> container name

Check the containers

$ docker ps –>show the running  containers

$docker images —>docker hub

$ docker ps -a –>status check

$ docker run –name=test-mysql –env=”MYSQL_ROOT_PASSWORD=mypassword” mysql —> name based create mysql

$ docker rm test-mysql —> remove the test-mysql

$ docker stop test-mysql –> stop the container

$ docker logs test-mysql → mysql container logs check



Connecting to the Container

$ docker inspect test-mysql –> you can see the ip address

    “IPAddress”: “”,

$ apt-get install mysql-client

$mysql -u root -p **** -h  -p 3306


$ip a | grep docker | grep inet

$docker stop test -mysql

$docker start test-mysql

Docker introduces another way to link your container with another container


$ docker run –detach –name test-wordpress –link test-mysql:mysql wordpress


$ docker ps –> check the linked container


$ docker exec -it test-wordpress bash –> run bash mode


$ docker rm -f test-mysql

$ docker run –detach –name=test-mysql –env=”MYSQL_ROOT_PASSWORD=mypass




Configuration content

Container configuration file

/etc/mysql/conf.d –> Inside container location


$ mysql -u root -p ***** -h -p 3306


Node Install process in docker


Install NPM and Express Framework

Create a new directory and initialize npm and directory to store files, run npm, and launch our application:


$ mkdir helloworld

$ cd helloworld

$ npm init

Install Express

Setup basic express server. The file below simply says to start a Node process that listens to port 3000 and responds with Hello World!

  $ npm install –save-prod express


The Docker-compose.yml file in order to start and stop our Docker containers as opposed to typing long Docker commands. You can think of this file as a config file for multiple Docker containers.

start the docker container with this command. This just means start the containers defined in our config file and run them in the background (-d)

                  $ docker-compose up -d

verify that your container is running



    $ docker ps


               Start & Stop containers from a docker-compose.yml file in the same directory

$ docker-compose up -d

               $ docker-compose stop

$ docker-compose restart

See the log files from your docker container

    $ docker-compose logs -f

Install PM2

PM2 can be used through the command line docker-compose.yml

$ npm install –save-prod pm2





change our docker-compose.yml file to use PM2 to start our app

instead of starting it directly from index.js.


               $ docker-compose restart

             ecosystem.config.js (only added the watch option)**


Install NPM and Express Framework

              $  docker exec -it app bash

                  The above command will put you inside the container so you can continue to run your 

commands from there i.e. npm run start or npm run test

                          $ docker exec -t app bash -c “npm run start”




Categories: Uncategorized