added timezone

To use the correct timezone add TZ=<Zone> to your .env file

README.md

@@ -35,6 +35,10 @@ GRAFANA_ADMIN_PASSWORD=changeme
 
 # Optional: seconds between ping iterations (default 5)
 #PING_INTERVAL=5
+
+# Optional: timezone for dashboard labels computed in SQL, e.g. the
+# hourly/weekday patterns and the raw data table (default UTC)
+#TZ=Europe/Berlin
 ```
 
 Start the containers:

docker-compose.yml

@@ -49,6 +49,9 @@ services:
       - GF_AUTH_ANONYMOUS_ORG_NAME=Main Org.
       - GF_AUTH_ANONYMOUS_ORG_ROLE=Viewer
       - GF_AUTH_ANONYMOUS_HIDE_VERSION=true
+      # SQL-computed labels (patterns, raw table, SLA day grouping) use SQLite's
+      # 'localtime', which resolves to this container's timezone.
+      - TZ=${TZ:-Etc/UTC}
     volumes:
       # :ro because any Grafana viewer (incl. anonymous) can send arbitrary SQL
       # to the datasource API; the mount and mode=ro keep that harmless.