Docker system prune (#47)

* Add docker system prune to avoid running out of disk space

* It shouldn't be interactive

Author: egeakman

deploy/playbook.yml

@@ -85,5 +85,8 @@
         minute: "*/5"
         job: "cd /srv && docker compose run app make all"
 
+    - name: Do a system prune to avoid running out of disk space
+      shell: "docker system prune -f"
+
     - name: Start Docker compose
       shell: "cd /srv && docker compose up -d --build --force-recreate"