Add timezone configuration instructions for Docker containers

self-host/advanced/timezone.mdx

@@ -0,0 +1,42 @@
+---
+title: "Container Timezone"
+description: "Configure the timezone for Pangolin, Gerbil, and Traefik containers to match your local time."
+---
+
+By default, Docker containers report logs and timestamps in **UTC**. If you want the containers and their log output to use your local timezone, you need to set the timezone in both the container environment and mount the host timezone files.
+
+## Updating your `docker-compose.yml`
+
+Add the following to your `pangolin`, `gerbil`, and `traefik` services in `docker-compose.yml`:
+
+```yaml title="docker-compose.yml"
+services:
+  pangolin:
+    environment:
+      - TZ=America/New_York          # Set your local timezone
+    volumes:
+      - /etc/localtime:/etc/localtime:ro  # Sync host timezone
+      - /etc/timezone:/etc/timezone:ro    # Optional: some apps read this file
+
+  gerbil:
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /etc/timezone:/etc/timezone:ro
+
+  traefik:
+    environment:
+      - TZ=America/New_York
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /etc/timezone:/etc/timezone:ro
+```
+### Notes
+
+- **Environment variable `TZ`** ensures most applications inside the container use the correct local timezone.  
+- **`/etc/localtime` volume** ensures that system utilities (e.g., `date`) inside the container show the correct time.  
+- **`/etc/timezone` volume** is optional, but some scripts and apps on Debian-based images read it to determine the timezone.  
+- Logs generated by the containers (including Traefik and Gerbil) will now reflect your local time instead of UTC.  
+
+<Warning>
+Make sure that the host system has the correct timezone configured, as the containers will reference these host files.
+</Warning>