added nopersistence image to drone pipeline

.drone.yml

@@ -77,6 +77,28 @@ steps:
   - git clone --recurse-submodules -b testing https://tildegit.org/tildelinux/lb-config config
   - lb build 
   - mv live-image-amd64.img /tl-builds/testing/tildelinux-testing.img
+- name: build_img_nopersist
+  image: debian:buster
+  privileged: true
+  volumes:
+  - name: builds
+    path: /tl-builds
+  - name: proc
+    path: /proc
+  - name: pts
+    path: /dev/pts
+  commands:
+  - apt-get update
+  - apt-get install -y live-build
+  - apt-get install -y git
+  - lb config
+  - rm -r config
+  - git clone --recurse-submodules -b testing https://tildegit.org/tildelinux/lb-config config
+  - cd config
+  - git apply patches/0001-remove-peristence.patch
+  - cd ..
+  - lb build 
+  - mv live-image-amd64.img /tl-builds/testing/tildelinux-testing-nopersistence.img
 - name: sha512sum
   image: debian:buster
   privileged: true