fix: deploy key based deployments

Author: andrasbacsai

app/Jobs/ApplicationDeploymentJob.php

@@ -1442,14 +1442,24 @@ private function check_git_if_build_needed()
         if ($this->pull_request_id !== 0) {
             $local_branch = "pull/{$this->pull_request_id}/head";
         }
-        $private_key = $this->application->privateKey?->getKeyLocation();
+        $private_key = data_get($this->application, 'private_key.private_key');
         if ($private_key) {
+            $private_key = base64_encode($private_key);
             $this->execute_remote_command(
                 [
-                    executeInDocker($this->deployment_uuid, "GIT_SSH_COMMAND=\"ssh -o ConnectTimeout=30 -p {$this->customPort} -o Port={$this->customPort} -o LogLevel=ERROR -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i {$private_key}\" git ls-remote {$this->fullRepoUrl} {$local_branch}"),
+                    executeInDocker($this->deployment_uuid, 'mkdir -p /root/.ssh'),
+                ],
+                [
+                    executeInDocker($this->deployment_uuid, "echo '{$private_key}' | base64 -d | tee /root/.ssh/id_rsa > /dev/null"),
+                ],
+                [
+                    executeInDocker($this->deployment_uuid, 'chmod 600 /root/.ssh/id_rsa'),
+                ],
+                [
+                    executeInDocker($this->deployment_uuid, "GIT_SSH_COMMAND=\"ssh -o ConnectTimeout=30 -p {$this->customPort} -o Port={$this->customPort} -o LogLevel=ERROR -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null\" git ls-remote {$this->fullRepoUrl} {$local_branch}"),
                     'hidden' => true,
                     'save' => 'git_commit_sha',
-                ],
+                ]
             );
         } else {
             $this->execute_remote_command(