Changelog

v1.0.0

• Initial release.
• Add DockerAvailability.executable/0 for locating the Docker CLI executable in PATH.
• Add DockerAvailability.available?/0 as a boolean convenience check for Docker usability.
• Add DockerAvailability.check/0 for collecting Docker executable, client version, and server version diagnostics.
• Add unit tests using a fake docker executable so the test suite does not require a running Docker daemon or Docker images.