Docker 101 - Hands On

This Lab deploys a sinatra application to a K8S cluster in the cloud.

Getting started

• Running the Sinatra App locally
• Running the Sinatra App in a local container

Running the Sinatra App locally

Before you start, make sure you are using ruby version 3.1. You can check the version by running ruby -v.

1. Clone this repository:

    git clone git@github.com:HeitorMC/HandsOn-k8s.git

2. Change into the application directory:

    cd HandsOn-k8s

3. install the dependencies:

    bundle exec ruby app.rb

4. Run the app

    bundle exec ruby app.rb

5. The web application will be availabe at http://localhost:4567/

Running the Sinatra App in a local container

1. Clone this repository:

    git clone git@github.com:HeitorMC/HandsOn-k8s.git

2. Change into the application directory:

    cd HandsOn-k8s

3. Build the app’s container image

    docker build -t sinatra-app .

4. Run the container

    docker run -p 4567:4567 sinatra-app

5. The web application will be availabe at http://localhost:4567/