A small hello-world http server written in Ruby using Sinatra web framework. The Dockerfile is used to build the container image. Based on this blog post.
#1. install docker http://docs.docker.io/en/latest/installation
#2. clone this repository
#3. create a docker container
$ sudo docker build -t luisbebop/docker-sinatra-hello-world .
#4. run the docker container you have created
$ sudo docker run -d -p 5000:5000 luisbebop/docker-sinatra-hello-world
This approach will use a container I previously uploaded to Docker registry
#1. run the docker container already uploaded to http://index.docker.io
$ sudo docker run -d -p 5000:5000 luisbebop/docker-sinatra-hello-world
# change the code, compile and push to github
$ sudo docker build -t luisbebop/docker-sinatra-hello-world .
$ sudo docker push luisbebop/docker-sinatra-hello-world
# on docker server or the same machine
$ sudo docker stop container-id
$ sudo docker pull luisbebop/docker-sinatra-hello-world
$ sudo docker run -d -p 5000:5000 luisbebop/docker-sinatra-hello-world