Add starting services locally with docker-compose documentation

[masmangan]

Update README.md to document a procedure to start services locally using docker-composer. See example at: https://github.com/spring-petclinic/spring-petclinic-microservices, Starting services locally with docker-compose section.

Draft: "First step is to clone this project with git clone --recurse-submodules https://github.com/pucrs-poli/devops-dojo. In order to start the complete infrastructure using Docker, you have to build images by executing docker ... from the project root. Once images are ready, you can start them with a single command docker-compose up. " Add installation instructions. Add complete command list. Optional: add instructions using Visual Studio Code and Docker Desktop, with screenshots.

Tasks:

• [ ] Write instructions to clone repository and start services locally using command-line or Visual Studio Code on README.md.
• [ ] Check if instructions are valid on each participant computer configuration.
• [ ] Update instructions to add details and configuration specific variants.
• [ ] Update instructions to add snapshot of Visual Studio Code or bash terminal with services running locally as a reference.

[masmangan]

Add volume creation with docker volume create --name=devops-dojo-keycloak-data.

[masmangan]

Add instructions to test manually if one service is running using a web browser.