Simple Bitbucket webhook autodeploy

build.sh

#!/usr/bin/env bash

# prevent simultaneous builds
while [ -f __build-lock ]; do
	echo "Other build in progress, sleeping for 10 seconds"
	sleep 10s
done
# just empty lock file to prevent multiple builds at the same time
touch __build-lock

# lay down Laravel app
./artisan down --message="Updating, please wait..."

git pull
composer install --no-dev
# migrate for Laravel
./artisan migrate --force

# build frontend
npm i --production
npm run build

# raise up the app
rm __build-lock
# for Laravel
./artisan up

nginx.conf

server {
	listen 80;
	server_name hdprog.ru;
	root /var/www/project/public;
	include fastcgi-php.conf;

	# deploy web hook
	location = /bitbucket-deploy-web-hook.php {
		# Bitbucket ports
		allow 104.192.136.0/21;
		allow 34.198.203.127;
		allow 34.198.178.64;
		allow 34.198.32.85;
		deny all;
		# for Laraver projects
		access_log /var/www/project/storage/logs/bitbucket-deploy.log;
		error_log /var/www/project/storage/logs/bitbucket-deploy.log;
		try_files $uri /index.php =404;
		fastcgi_split_path_info ^(.+\.php)(/.+)\$;
		# php socket, change if needed
		fastcgi_pass unix:/run/php/php7.2-fpm.sock;
		fastcgi_index index.php;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		include fastcgi_params;
	}
}

webhook.php

<?php

// 20 minutes
set_time_limit(1200);
header('Content-Type: text/plain');

$data = json_decode(file_get_contents('php://input'), true);

if (!$data) die('No request body');

// get all pushed repository changes
$changes = $data['push']['changes'] ?? null;

if (empty($changes)) die('No changes');

// get current branch
$branch = trim(shell_exec('cd ../ && git branch | grep \* | cut -d \' \' -f2'));

$changed = false;

echo 'Checking changes on branch ', $branch, PHP_EOL;
foreach ((array)$changes as $change) {
	$change = $change['new'] ?? null;
	/** @noinspection NotOptimalIfConditionsInspection */
	if ($change && isset($change['type'], $change['name']) && $change['type'] === 'branch') {
		echo 'Branch ' . $change['name'] . ' has been changed' . PHP_EOL;
		if ($change['name'] === $branch) {
			$changed = true;
			break;
		}
	}
}

if (!$changed) die('Nothing changed');

echo 'Building started';

// send response and continue with building
fastcgi_finish_request();

// cd to the project root (suppose cwd is a project/public or project/public_html, whatever)
shell_exec('cd ../ && ./build.sh');