Lab 8: The ‘Images’ Command

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The docker-compose images command help to listout images used/created by the containers.

Pre-requisite:

Tested Infrastructure

Platform	Number of Instance	Reading Time
Play with Docker	1	5 min

Pre-requisite

Create an account with DockerHub
Open PWD Platform on your browser
Click on Add New Instance on the left side of the screen to bring up Alpine OS instance on the right side

Assignment

Create a docker-compose.yml with custom image
Build container and network
Bringup the containers
List out the images used by the containers

Create a docker-compose.yml with custom image

Setup environment

$ mkdir -p docker-compose/build
$ cd docker-compose/build

Now lets create the Dockerfile

FROM nginx:alpine
RUN echo "Welcome to Docker Workshop!" >/usr/share/nginx/html/index.html
CMD ["nginx", "-g", "daemon off;"]

Create a docker-compose.yml file

version: "3.7"
services:
  webserver:
    build:
      context: .
      dockerfile: Dockerfile
    image: webapp:v1
    container_name: Nginx
    ports:
      - "80:80"
  dbserver:
     image: mysql:5.7
     container_name: Mysqldb
     restart: unless-stopped
     ports:
       - "3306:3306"
     environment:
       MYSQL_ROOT_PASSWORD: Pa$$w0rd
       MYSQL_USER: test
       MYSQL_PASSWORD: Pa$$w0rd123
       MYSQL_DATABASE: test 
     volumes:
       - db_data:/var/lib/mysql
volumes:
  db_data:

Bringup the containers

$ docker-compose up -d

NOTE: This will build the images and bringup the containers. -d option which will run the container in background.

List out the images used by the containers

$  docker-compose images
Container   Repository   Tag     Image Id      Size  
-----------------------------------------------------
Mysqldb     mysql        5.7   383867b75fd2   356 MB 
Nginx       webapp       v1    3454fa918c0d   20.2 MB

mysql is the one used for dbserver and webapp:v1 is the custome image used for webserver.

Lab 8: The ‘Images’ Command

Pre-requisite:

Tested Infrastructure

Pre-requisite

Assignment

Create a docker-compose.yml with custom image

Setup environment

Now lets create the Dockerfile

Create a docker-compose.yml file

Bringup the containers

List out the images used by the containers

Lab 8: The ‘Images’ Command

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