Docker usage examples

gistfile1.txt

* http://docker.com
* guides: https://docs.docker.com/installation/#installation
* Docker hub: http://hub.docker.com

# Useage of existiing images - jira example (all in one)
 * docker pull cptactionhank/atlassian-jira:latest # pull the image from docker hub
 * docker run -p 8080:8080 cptactionhank/atlassian-jira:latest # run's a container with a jira instance
 * http://docker-host:8080/

# Useage of existing images - wordpress example (db and webserver)
 * docker pull mysql # pull the image from docker hub
 * docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=mysecretpassword -d mysql # runs an mysql container
 * docker pull wordpress # pull the image from docker hub
 * docker run --name some-wordpress --link some-mysql:mysql -e WORDPRESS_DB_PASSWORD=mysecretpassword -d wordpress # run's a container with wordpress instance
 * http://docker-host:8080/

# Rails with Docker - on_ruby example
 * git clone git@github.com:thomet/on_ruby.git branch: docker
 ** docker build -t on_ruby . # Builds the on_ruby docker image (see Dockerfile)
 ** docker pull postgres # pull the image from docker hub
 ** docker run --name my_db -e POSTGRES_USER=myuser -e POSTGRES_PASSWORD=mysecretpassword -d postgres # run's a container with postgress instance
 ** docker run --rm --link my_db:db -v ~/thomet-dev/on_ruby:/var/www -e DB_HOST=db -e DB_USERNAME=myuser -e DB_PASSWORD=mysecretpassword on_ruby rake db:setup # run's a container with the rake db:setup command and removes the container afther that
 ** docker run --name on_ruby --link my_db:db -v ~/thomet-dev/on_ruby:/var/www -e DB_HOST=db -e DB_USERNAME=myuser -e DB_PASSWORD=mysecretpassword -p 5000:5000 on_ruby foreman start # run's a container with on_ruby application
 ** open http://www.onruby.dev:5000 # don't forgott the www.onruby.dev entry in /etc/hosts in your host system (also leipzig.onruby.dev etc.)

# Tools
 * fig: http://www.fig.sh
 * install on macos: brew install fig
 * in the on_ruby project:
 ** see fig.yml in project
 ** fig pull # pulls all images from docker hub
 ** fig run webserver rake db:setup # runs the rake db:setup for setup the database
 ** fig up # runs the application and database server
 ** http://www.onruby.dev:5000

 * NSEnter: https://github.com/jpetazzo/nsenter
 ** how-to use with boot2docker: http://blog.sequenceiq.com/blog/2014/07/05/docker-debug-with-nsenter-on-boot2docker/
 ** linux: nsenter onruby_webserver_1
 ** mac: docker-enter onruby_webserver_1