The correct answer is FALSE. Docker does have a built-in framework for testing, called Docker Compose. Docker Compose is a tool for running multiple containers at once. It is a YAML file that defines a set of services that should be run together. Each service is defined by its image, ports, and environment variables. Docker Compose can be used to run tests in a development environment, or it can be used to deploy tests to a production environment.
Here is an example of a Docker Compose file that defines two services: a web server and a database server:
version: '3.7'
services:
web:
image: nginx:latest
ports:
- "80:80"
db:
image: postgres:latest
ports:
- "5432:5432"
To run this Docker Compose file, you can use the following command:
docker-compose up
This will start the web server and the database server in separate containers. You can then access the web server by visiting http://localhost in your web browser.
Docker Compose can also be used to run tests. To do this, you need to create a file called docker-compose.test.yml. This file should contain the same services as the docker-compose.yml file, but it should also include a section called tests. The tests section should define the tests that you want to run.
Here is an example of a docker-compose.test.yml file:
“`
version: ‘3.7’
services:
web:
image: nginx:latest
ports:
– “80:80”
db:
image: postgres:latest
ports:
– “5432:5432”
tests:
– name: Test the web server
image: busybox
command: curl -s http://localhost
“`
This docker-compose.test.yml file defines a test that will curl the web server. To run this test, you can use the following command:
docker-compose test
This will run the test and report the results.
Docker Compose is a powerful tool that can be used to run tests in a development environment, or it can be used to deploy tests to a production environment.