Update peertube to v7.0.0

I also added image preloading to reduce downtime.

roles/peertube/tasks/main.yml

@@ -39,11 +39,16 @@
   become: true
   community.docker.docker_volume:
     name: peertube-data
+- name: Pull peertube image
+  become: true
+  community.docker.docker_image:
+    name: "{{ image }}"
+    source: pull
 - name: Run peertube container
   become: true
   community.docker.docker_container:
     name: peertube
-    image: chocobozzz/peertube:v6.3.2-bookworm
+    image: "{{ image }}"
     networks:
       - name: peertube
       - name: haproxy

roles/peertube/vars/main.yml

@@ -0,0 +1 @@
+image: chocobozzz/peertube:v7.0.0-bookworm