Deployer 6.0 - Symfony Flex (4.0) Basic Deploy script

deploy.php

<?php
namespace Deployer;

require 'recipe/common.php';

//Project Name
set('application', 'app_name');

// Project repository
set('repository', '[email protected]:USER/REPO.git');

// [Optional] Allocate tty for git clone. Default value is false.
set('git_tty', true);

//composer options
set('composer_action', 'update');
set('composer_options', '{{composer_action}} --optimize-autoloader --no-suggest --no-progress');

// Shared files/dirs between deploys
set('shared_files', [
    '.env',
]);

set('shared_dirs', [
    'var/log'
]);

// Writable dirs by web server
set('writable_dirs', []);

set('allow_anonymous_stats', false);

// Hosts
host('website.net')
    ->set('deploy_path', '/var/www/website.net');

// Tasks
task('symlink:public', function() {
    $output = run('if [ ! -d {{deploy_path}}/www ]; then ln -s {{deploy_path}}/current/public {{deploy_path}}/www; fi;');
});

task('doctrine:update', function() {
    $output = run('if [ -f {{deploy_path}}/current/bin/console ]; then php {{deploy_path}}/current/bin/console doctrine:schema:update --force; fi');
    writeln('<info>' . $output . '</info>');
});

desc('Deploy project');
task('deploy', [
    'deploy:info',
    'deploy:prepare',
    'deploy:lock',
    'deploy:release',
    'deploy:update_code',
    'deploy:shared',
    'deploy:writable',
    'deploy:vendors',
    'deploy:clear_paths',
    'deploy:symlink',
    'deploy:unlock',
    'symlink:public',
    'cleanup',
    'success'
]);

// [Optional] If deploy fails automatically unlock.
after('deploy:failed', 'deploy:unlock');

Nothing special, but if you want to get a basic app up you can use this as a base. Since almost all your configuration is in the .env file you can share just that file and maybe the logs folder and you're good to go.