fix(wger): declare the database in the environment for wger 2.7

wger 2.7 removed the implicit sqlite fallback from settings/main.py, so
DJANGO_DB_ENGINE / DJANGO_DB_DATABASE are now mandatory and the add-on
aborted at startup with ImproperlyConfigured. Set them explicitly,
keeping the persistent /data/database.sqlite path.

Closes #3043

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

wger/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 2.6.4 (2026-09-05)
+
+- Fix the add-on failing to start with `ImproperlyConfigured: Set the DJANGO_DB_ENGINE environment variable`: wger 2.7 removed the implicit sqlite fallback from its settings, so the database is now declared explicitly through `DJANGO_DB_ENGINE` / `DJANGO_DB_DATABASE`, still pointing at the persistent `/data/database.sqlite`
+- Replace the misleading "Unable to find Python settings containing database path" warning with an informational message, as wger no longer hardcodes that path
+
 ## 2.6.3 (2026-08-01)
 
 - Version renamed from `2.6-dev-3`, which Home Assistant could not order and therefore could not reliably offer as an update: every number of the previous version is kept, as a section of its own. The addon itself and the upstream version it tracks are unchanged

wger/Dockerfile

@@ -34,6 +34,18 @@ ENV SYNC_EXERCISES_ON_STARTUP=True \
     DJANGO_MEDIA_ROOT="/data/media" \
     DJANGO_STATIC_ROOT="/data/static"
 
+# wger 2.7 dropped the implicit sqlite fallback in settings/main.py, so the
+# database has to be declared through the environment or Django aborts with
+# "Set the DJANGO_DB_ENGINE environment variable".
+# USER/PASSWORD/HOST/PORT are ignored by the sqlite backend; they are set
+# because wger 2.6 read them without a default, so both base images boot.
+ENV DJANGO_DB_ENGINE="django.db.backends.sqlite3" \
+    DJANGO_DB_DATABASE="/data/database.sqlite" \
+    DJANGO_DB_USER="" \
+    DJANGO_DB_PASSWORD="" \
+    DJANGO_DB_HOST="" \
+    DJANGO_DB_PORT="5432"
+
 USER root
 
 RUN echo "wger ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers && \

wger/config.yaml

@@ -23,5 +23,5 @@ schema:
 slug: wger
 udev: true
 url: https://github.com/alexbelgium/hassio-addons
-version: "2.6.3"
+version: "2.6.4"
 webui: "[PROTO:ssl]://[HOST]:[PORT:80]"

wger/rootfs/etc/cont-init.d/90-run.sh

@@ -62,7 +62,9 @@ if [ "${#SETTINGS_FILES[@]}" -gt 0 ]; then
         sed -i "s|/home/wger/db/database.sqlite|/data/database.sqlite|g" "$settings_file"
     done
 else
-    bashio::log.warning "Unable to find Python settings containing database path under /home, skipping rewrite"
+    # Expected on wger >= 2.7: the settings no longer hardcode a database path,
+    # it is taken from DJANGO_DB_DATABASE instead (set in the Dockerfile)
+    bashio::log.info "Settings do not hardcode a database path, using DJANGO_DB_DATABASE=${DJANGO_DB_DATABASE:-/data/database.sqlite}"
 fi
 
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