Workshop 2: Multicontainer Scenarios in Docker

Nextcloud deployment

We will deploy the nextcloud application with a database (you can choose mariadb or PostgreSQL) using the docker-compose application. You can take as model the file ‘docker-compose.yml’ that we have studied to display WordPress.

  1. Install docker- compose on your computer.
  1. Within a directory creates a ‘docker-composer.yml’ file for the deployment of nextcloud with a database. Remember the environment variables and the persistence of information.
javiercruces@docker:~/taller2$ cat docker-compose.yaml 
version: '2'

volumes:
  nextcloud:
  db:

services:
  db:
    image: mariadb:10.6
    restart: always
    command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
    volumes:
      - db:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=root
      - MYSQL_PASSWORD=javiercruces
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud

  app:
    image: nextcloud
    restart: always
    ports:
      - 8081:80
    links:
      - db
    volumes:
      - nextcloud:/var/www/html
    environment:
      - MYSQL_PASSWORD=javiercruces
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud
      - MYSQL_HOST=db
  1. Raise the stage with ‘docker-compose’.
javiercruces@docker:~/taller2$ docker compose up -d 
[+] Running 2/2
 ✔ Container taller2-db-1   Started                                                                0.0s 
 ✔ Container taller2-app-1  Started                                                                0.0s
  1. Show the containers with ‘docker-compose’.
javiercruces@docker:~/taller2$ docker compose ps
NAME            IMAGE          COMMAND                                                                                              SERVICE   CREATED         STATUS         PORTS
taller2-app-1   nextcloud      "/entrypoint.sh apache2-foreground"                                                                  app       7 minutes ago   Up 5 minutes   0.0.0.0:8081->80/tcp, :::8081->80/tcp
taller2-db-1    mariadb:10.6   "docker-entrypoint.sh --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW"   db        7 minutes ago   Up 5 minutes   3306/tcp
  1. Access the application and check that it works.

  1. Check the storage you have defined and that a new bridge-type network has been created.
javiercruces@docker:~/taller2$ docker network ls
NETWORK ID     NAME              DRIVER    SCOPE
5dd43eadf03b   bridge            bridge    local
40fad2a3552b   host              host      local
9f5f2450d012   none              null      local
a1f8faf5a100   taller1           bridge    local
fcf9b3b0fed4   taller2_default   bridge    local

javiercruces@docker:~/taller2$ docker volume ls
DRIVER    VOLUME NAME
local     0dd5f1f824800210c4ce522371cb31ef1075c779566ed986b8718a88eb4b50a9
local     5d742d485cd427d22f688488a3d28f562e6e8037ecf2e56f7fb81dc6db71e26b
local     9eeb57dc83abfd57998498152b2a03527b8743ccf1eee5cba2e7ef891030e496
local     87622e5677a467c635c75f868ae123679269507fbe7f6a47b0804999a0845f01
local     d9cb1b25e8892ef2f8b51b1352a00d44451616eb0f52db43cb8d42d391b9ab1b
local     db_vol
local     miweb
local     taller2_db
local     taller2_nextcloud
  1. Delete the stage with ‘docker-compose’.
javiercruces@docker:~/taller2$ docker compose rm -sf
[+] Stopping 2/2
 ✔ Container taller2-app-1  Stopped                                                                                                                                                                           3.6s 
 ✔ Container taller2-db-1   Stopped                                                                                                                                                                           6.1s 
Going to remove taller2-app-1, taller2-db-1
[+] Removing 2/0
 ✔ Container taller2-db-1   Removed                                                                                                                                                                           0.1s 
 ✔ Container taller2-app-1  Removed