diff --git a/tests/lock_setup.php b/tests/lock_setup.php
new file mode 100644
index 000000000..5193548dc
--- /dev/null
+++ b/tests/lock_setup.php
@@ -0,0 +1,17 @@
+<?php
+
+$lock = fopen('/tmp/woodpecker.lock', 'c+');
+flock($lock, LOCK_EX);
+
+if (fread($lock, 1) !== "1") {
+    exec("tests/setup.sh", $o, $res);
+    fwrite($lock, "1");
+} else {
+    $o = [];
+    $res = 0;
+}
+
+flock($lock, LOCK_UN);
+
+echo implode("\n", $o);
+exit($res);
\ No newline at end of file
diff --git a/tests/setup.sh b/tests/setup.sh
new file mode 100755
index 000000000..7d8823243
--- /dev/null
+++ b/tests/setup.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -ex
+
+export COMPOSER_PROCESS_TIMEOUT=100000
+
+apk add procps git unzip github-cli openssh
+
+php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
+php composer-setup.php
+php -r "unlink('composer-setup.php');"
+mv composer.phar /usr/local/bin/composer
+
+php tests/jit.php
+
+composer update
diff --git a/tests/test.sh b/tests/test.sh
index daa617db6..f844691c7 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -4,25 +4,7 @@ set -ex
 
 export COMPOSER_PROCESS_TIMEOUT=100000
 
-(
-    flock -x 200 || exit 1
-
-    touch /tmp/ci_status
-    if [ "$(cat /tmp/ci_status)" != "done" ]; then
-        apk add procps git unzip github-cli openssh
-
-        php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-        php composer-setup.php
-        php -r "unlink('composer-setup.php');"
-        mv composer.phar /usr/local/bin/composer
-
-        php tests/jit.php
-
-        composer update
-
-        echo done > /tmp/ci_status
-    fi
-) 200>/var/lock/woodpecker.lock
+php tests/lock_setup.php
 
 if [ "$1" == "cs" ]; then
     composer psalm