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Using Docker Compose

Similar to generic containers support, it's also possible to run a bespoke set of services specified in a docker-compose.yml file.

This is intended to be useful on projects where Docker Compose is already used in dev or other environments to define services that an application may be dependent upon.

You can override Testcontainers' default behaviour and make it use a docker-compose binary installed on the local machine. This will generally yield an experience that is closer to running docker-compose locally, with the caveat that Docker Compose needs to be present on dev and CI machines.

Examples

composeFilePaths := []string {"testresources/docker-compose.yml"}
identifier := strings.ToLower(uuid.New().String())

compose := tc.NewLocalDockerCompose(composeFilePaths, identifier)
execError := compose.
    WithCommand([]string{"up", "-d"}).
    WithEnv(map[string]string {
        "key1": "value1",
        "key2": "value2",
    }).
    Invoke()
err := execError.Error
if err != nil {
    return fmt.Errorf("Could not run compose file: %v - %v", composeFilePaths, err)
}
return nil

Note that the environment variables in the env map will be applied, if possible, to the existing variables declared in the docker compose file.

In the following example, we demonstrate how to stop a Docker compose using the convenient Down method.

composeFilePaths := []string{"testresources/docker-compose.yml"}

compose := tc.NewLocalDockerCompose(composeFilePaths, identifierFromExistingRunningCompose)
execError := compose.Down()
err := execError.Error
if err != nil {
    return fmt.Errorf("Could not run compose file: %v - %v", composeFilePaths, err)
}
return nil