feat: add self-healing entrypoint wrapper for interrupted upgrades

Author: Chuy García

nextcloud/Dockerfile

@@ -22,3 +22,11 @@ RUN { \
 } > /usr/src/nextcloud/config/redis.config.php
 
 EXPOSE 8034
+
+# Self-healing entrypoint wrapper: runs `occ upgrade` on every boot before
+# delegating to the upstream Nextcloud entrypoint. This fixes the case where
+# a previous upgrade was interrupted after code sync but before DB migrations,
+# leaving the instance stuck in maintenance mode with matching versions.
+COPY docker-entrypoint.dappnode.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker-entrypoint.dappnode.sh
+ENTRYPOINT ["docker-entrypoint.dappnode.sh"]

nextcloud/docker-entrypoint.dappnode.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Self-heal interrupted upgrades: if Nextcloud is already installed but a
+# previous upgrade was interrupted after code sync but before DB migrations,
+# the upstream entrypoint will not retry because the version numbers already
+# match. Run occ upgrade unconditionally here (it is idempotent) so the
+# instance can boot out of maintenance mode by itself.
+if [ -f /var/www/html/occ ]; then
+    su -p www-data -s /bin/sh -c '/usr/local/bin/php /var/www/html/occ upgrade' || true
+fi
+
+exec /entrypoint.sh "$@"