TUTORIAL.md

Docker Dev Workshop, Tutorial

Docker

See Prerequisites to create a Docker Machine if desired.

Use docker-run to execute a bash

Use docker run to create a new container based on a given image:

docker run --name my-debian-container -it debian:latest /bin/bash

List (all, also non-running) containers:

docker ps -a

Delete container with:

docker rm my-debian-container

Use docker run and install stuff, run apache

docker run --rm --name my-debian-container -p 8000:80 \
 -it debian:latest /bin/bash

Install Apache and PHP inside the Container:

# install apache with mod_php
apt-get update ; apt-get -y install vim libapache2-mod-php
# start apache
/etc/init.d/apache2 start
vi /var/www/html/phpinfo.php

Run the browser and access phpinfo()

open http://$(docker-machine ip workshop):8000/phpinfo.php

Dockerfile

Build myapp as an image:

docker build -t myapp app/

List available docker images:

docker images

Create a new app instance and from the myapp image:

docker run -d -p 8000:80 --name myapp_1 myapp

-d - daemon, runs in background

List running containers:

docker ps

Stop and remove the app instance:

docker stop myapp_1
docker rm -v myapp_1

Link a local dir to the app instance

mkdir -p app/html
docker run -d -p 8000:80 --name myapp_1 -v $(pwd)/app/html:/var/www/html myapp

References

• Dockerfile reference

Docker Compose

Instead of using docker manually a docker-compose.yml configuration file can be used instead:

docker-compose up -d

---

Prerequisites

Use docker-machine to create a new VM for this workshop.

docker-machine create -d virtualbox workshop
eval $(docker-machine env workshop)