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Workshop 1: Storage and Networks in Docker

Workshop 1: Storage and Networks in Docker Storage Let’s work with Docker volumes: Create a Docker volume called “miweb”: docker volume create miweb Create a container from the image php:7.4-apache, mounting the Docker volume in /var/www/html (the DocumentRoot of the server): docker run -d --name my-apache-app -v miweb:/var/www/html -p 8080:80 php:7.4-apache Use the docker cp command to copy an index.html file (with your name) into /var/www/html: echo "<h1>Javier Cruces</h1>" > index.html docker cp index.html my-apache-app:/var/www/html/ Access the container from the browser to check the index.html file:

Thursday, March 14, 2024 | 2 minutes Read
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Workshop 2: Multicontainer Scenarios in Docker

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. Install docker- compose on your computer. 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 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 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 Access the application and check that it works.

Thursday, March 14, 2024 | 2 minutes Read
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Workshop 3: Docker Imaging

Workshop 3: Docker Image Creation Creating an image from a Dockerfile 1.Create a static website (e.g. search for an HTML5 template). Or just create an index.htm ml. Create a Dockerfile file to create an image with a web server by serving the page. You can use a debian or ubuntu base image, or an image that already has a web service, as we have seen in Example 1: Image construction with a static page. javiercruces@docker:~/taller3$ cat Dockerfile #syntax=docker/dockerfile:1 FROM httpd:2.4 COPY ./public_html/ /usr/local/apache2/htdocs/ EXPOSE 80 Run the docker command that creates the new image. The image should be called my_server_web:v1. javiercruces@docker:~/taller3$ docker build -t javiersaping/mi_servidor_web:v1 . Sending build context to Docker daemon 3.584kB Step 1/3 : FROM httpd:2.4 ---> 92fa43a2ff60 Step 2/3 : COPY ./public_html/ /usr/local/apache2/htdocs/ ---> b03556dd59b6 Step 3/3 : EXPOSE 80 ---> Running in 1cc04e1deee4 Removing intermediate container 1cc04e1deee4 ---> 3078183767ef Successfully built 3078183767ef Successfully tagged javiersaping/mi_servidor_web:v1 javiercruces@docker:~/taller3$ docker run -d -p 8081:80 javiersaping/mi_servidor_web:v1 2a753adcd098c49b7b215b7c97267a09e09194303bee131150765222a4295dea

Thursday, March 14, 2024 | 3 minutes Read