[ENH] update backup image and remove source mismatch

templates/backup.yaml.j2

 version: "2.1"
 services:
     backup_privatebin:
-        image: tecnativa/duplicity:postgres
+        image: remifilament/duplicity:postgres # Until https://github.com/Tecnativa/docker-duplicity/pull/324 is merged
+        # image: ghcr.io/tecnativa/docker-duplicity-postgres:master # Once https://github.com/Tecnativa/docker-duplicity/pull/324 is merged
         hostname: {{ inventory_hostname_short | lower | regex_replace('_','') }}-privatebin
         environment:
             DST: "swift://privatebin_{{ inventory_hostname|lower }}"
@@ -20,7 +21,6 @@ services:
             JOB_300_WHAT: "backup --full-if-older-than 6D"
             JOB_302_WHAT: "dup remove-all-but-n-full 5 --force $$DST $$@"
             JOB_302_WHEN: "daily"
-            OPTIONS: "--allow-source-mismatch"
         volumes:
             - privatebin_backup_cache:/root/.cache/duplicity/
             - privatebin_data:/mnt/backup/src/privatebin:z

templates/backup2.yaml.j2

 version: "2.1"
 services:
     backup_privatebin:
-        image: tecnativa/duplicity:postgres
+        image: remifilament/duplicity:postgres # Until https://github.com/Tecnativa/docker-duplicity/pull/324 is merged
+        # image: ghcr.io/tecnativa/docker-duplicity-postgres:master # Once https://github.com/Tecnativa/docker-duplicity/pull/324 is merged
         hostname: {{ inventory_hostname_short | lower | regex_replace('_','') }}-privatebin
         environment:
             DST: "swift://privatebin_{{ inventory_hostname|lower }}"
@@ -20,7 +21,6 @@ services:
             JOB_300_WHAT: "backup --full-if-older-than 6D"
             JOB_302_WHAT: "dup remove-all-but-n-full 5 --force $$DST $$@"
             JOB_302_WHEN: "daily"
-            OPTIONS: "--allow-source-mismatch"
         volumes:
             - privatebin_backup2_cache:/root/.cache/duplicity/
             - privatebin_data:/mnt/backup/src/privatebin:z