Lab 7: The ‘Up’ Command

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The docker-compose up command help you to bring up a multi-container application, which you have described in your docker-compose file.

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

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:

Build container and network

Won’t start the container

$ docker-compose up --no-start
Creating network "build_default" with the default driver
Creating Nginx   ... done
Creating Mysqldb ... done

Checking the status

$ docker-compose ps
 Name               Command             State    Ports
------------------------------------------------------
Mysqldb   docker-entrypoint.sh mysqld   Exit 0        
Nginx     nginx -g daemon off;          Exit 0    

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.

Checking webserver respone

$ curl http://localhost
Welcome to Docker Workshop!

Checking dbserver respone

$ docker exec -it Mysqldb mysql -u root -p
Enter password: 

Rebuild the docker image and bring the stack up

$ docker-compose up -d --build

Lab 7: The ‘Up’ 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

Build container and network

Checking the status

Bringup the containers

Checking webserver respone

Checking dbserver respone

Rebuild the docker image and bring the stack up

Lab 7: The ‘Up’ Command

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