fix: [nextcloud] make charm work on first ``compose up``

nextcloud/lib/common

@@ -96,6 +96,13 @@ create_occ_if_not_exists() {
 
         if ! out=$(
                 export COMPOSE_IGNORE_ORPHANS=true
+                ## XXXvlab: this is to avoid re-running init from
+                ## apache (if provided in compose.yml) that is bugged
+                ## and will delete all config. It'll be run even if it
+                ## seems excluded because ALL_RELATION is already
+                ## solved.  These are 2 mishaps that will need to be
+                ## addressed in compose-core.
+                export ALL_RELATIONS=
                 compose --debug --without-relation="$SERVICE_NAME":web-proxy run \
                         -v "$CHARM_PATH"/src/fake-apache:/usr/bin/apache \
                         --rm --entrypoint /entrypoint.sh "$SERVICE_NAME" apache 2>&1