Example: Using docker-compose

This topic provides an example of how you can use Docker containers to run a Silk4J test set on Google Chrome on a Linux machine with Apache Ant. Before you can run the test set, you have to perform the following tasks:

Install Docker on your machine.
Run the "Hello, World" program from the command line to verify that your basic Docker setup is configured correctly:
```
docker run hello-world
```
Prepare your Silk4J project for executing tests with Ant. For additional information, see Replaying Tests with Apache Ant.
Copy the project to your Linux machine, for example to /home/<user name>/projects/InsuranceWeb.

To run the tests in the Silk4J project on Google Chrome.

Create the docker-compose .yml file.

version: '3'
services:
  chrome:
    image: selenium/standalone-chrome:latest
    environment:
      - JAVA_OPTS=-Dselenium.LOGGER.level=WARNING
  agent:
    image: functionaltesting/silktest:latest
    environment:
      - SILK_LICENSE_SERVER=lnz-lic1.microfocus.com
      - SILK_LOG_FILE_PATH=/logs
    depends_on:
      - chrome
    links:
      - chrome
    volumes:
      - /home/<user name>/projects/logs:/logs
  tests-runner:
    image: webratio/ant:1.10.1
    volumes:
      - /home/<user name>/InsuranceWeb:/tmp/project
    command: ["ant", "-DagentRmiHost=agent:22902", "-Dsilktest.configurationName=host=http://chrome:4444/wd/hub;platformName=Linux - GoogleChrome", "-buildfile", "/tmp/project/build.xml", "runTests"]
    depends_on:
      - agent
    links:
      - agent

Note: In order for the agentRmiHost system property to work, your test script must create a Desktop object by calling the constructor with no arguments. Additionally, in order for the silktest.configurationName system property to work, your test script must create a BrowserBaseState object by calling the constructor with no arguments.

Pull the latest version of the involved images to your registry.
```
docker-compose pull
```
Execute the tests and stop all containers when the first container, in this case the Ant container, stops.
```
docker-compose up --abort-on-container-exit
```
View the test results under /home/<user name>/projects/logs.
Optional: Cleanup your test environment.
```
docker-compose down
```

You could combine the commands for pulling the latest versions, executing the tests, and cleaning up the test environment into a single command.

docker-compose pull && docker-compose up --abort-on-container-exit && docker-compose down