Add GPG key and reorganize dockerbox configuration

- Add new primary GPG key in dev config for compose repos
- Slight reorganization of the dockerbox production playbook
- Remove group management in the docker role
- Move HSTS inside the location block
- Add git ignore entry for .ansible files
- Add X-Forwarded-Proto proxy header

playbooks/dockerbox.yml

@@ -3,9 +3,9 @@
   become: true
   roles:
     - base
+    - jenkins
     - docker
+    - mariadb
     - traefik
     - nextcloud
-    - jenkins
-    - prometheus
-    - nginx
+    - proxy