fix(ci): run deploy stage under bash for pipefail support

Reviewed-on: http://gitea.lan:3000/robbond/pleskSaas/pulls/51

Jenkinsfile

@@ -90,6 +90,7 @@ stage('Deploy') {
       keyFileVariable: 'SSH_KEY'
     )]) {
       sh '''
+bash <<EOF
 set -euxo pipefail
 
 echo "Deploying image tag: ${IMAGE_BUILD}"
@@ -135,6 +136,7 @@ ssh -i "$SSH_KEY" "$APP_USER@$APP_HOST" \
 
 echo "Printing final running container image metadata"
 ssh -i "$SSH_KEY" "$APP_USER@$APP_HOST" "docker inspect plesk-agency-portal --format='{{.Image}} {{.Created}}'"
+EOF
       '''
     }
   }