deployer/recipe/symfony4.php

<?php
namespace Deployer;

require_once __DIR__ . '/common.php';

set('shared_dirs', ['var/log', 'var/sessions']);
set('shared_files', ['.env.local.php', '.env.local']);
set('writable_dirs', ['var']);
set('migrations_config', '');

set('bin/console', function () {
    return parse('{{release_path}}/bin/console');
});

set('console_options', function () {
    return '--no-interaction';
});

desc('Migrate database');
task('database:migrate', function () {
    $options = '--allow-no-migration';
    if (get('migrations_config') !== '') {
        $options = sprintf('%s --configuration={{release_path}}/{{migrations_config}}', $options);
    }

    run(sprintf('cd {{release_path}} && {{bin/php}} {{bin/console}} doctrine:migrations:migrate %s {{console_options}}', $options));
});

desc('Clear cache');
task('deploy:cache:clear', function () {
    run('{{bin/php}} {{bin/console}} cache:clear {{console_options}} --no-warmup');
});

desc('Warm up cache');
task('deploy:cache:warmup', function () {
    run('{{bin/php}} {{bin/console}} cache:warmup {{console_options}}');
});

desc('Deploy project');
task('deploy', [
    'deploy:prepare',
    'deploy:vendors',
    'deploy:cache:clear',
    'deploy:cache:warmup',
    'deploy:publish',
]);

after('deploy', 'success');