From c41b3ed134c48ecc14adfbd3c1805618f929ade5 Mon Sep 17 00:00:00 2001
From: Matthew Green <greenmatthew07@gmail.com>
Date: Tue, 8 Apr 2025 18:24:40 -0500
Subject: [PATCH] Adding custom TZ support.

---
 Dockerfile    | 2 ++
 Makefile      | 3 ++-
 README.md     | 5 +++++
 entrypoint.sh | 7 +++++++
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 2080be9..bf4d676 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,6 +8,8 @@ ENV CONFIG_TEMPLATES_DIR=${INSTALL_DIR}/config-templates
 # Default UID/GID that can be overridden at runtime
 ENV UID=1000
 ENV GID=1000
+# Default timezone is UTC
+ENV TZ=Etc/UTC
 
 # Install dependencies
 RUN apt-get update && \
diff --git a/Makefile b/Makefile
index ef43e74..ba1ad72 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 # Configuration
 IMAGE_NAME := greenmatthew/scp-secret-laboratory-server
-VERSION := 1.0.0
+VERSION := 1.0.1
 CONTAINER_NAME := scp-sl-server
 PORT := 7777
 SHELL := /bin/sh
@@ -24,6 +24,7 @@ run: build
 	docker run -d --name $(CONTAINER_NAME) \
 		-p $(PORT):$(PORT)/udp \
 		-v $(PWD)/config:/home/steam/.config \
+		-e TZ=America/Chicago \
 		-e UID=1001 \
 		-e GID=1001 \
 		--restart unless-stopped \
diff --git a/README.md b/README.md
index 036bb84..b08940a 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,8 @@ services:
     environment:
       - UID=1000
       - GID=1000
+      # To set a timezone, uncomment the next line and change Etc/UTC to a TZ identifier from this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List).
+      # - TZ=Etc/UTC
     restart: unless-stopped
 ```
 
@@ -55,6 +57,8 @@ docker run -d \
   -v ./config:/home/steam/.config \
   -e UID=1000 \
   -e GID=1000 \
+  # To set a timezone, uncomment the next line and change Etc/UTC to a TZ identifier from this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List).
+  # -e TZ=Etc/UTC \
   --restart unless-stopped \
   greenmatthew/scp-secret-laboratory-server:latest
 ```
@@ -74,6 +78,7 @@ Mounting the .config directory allows you to configure any server setting and ha
 
 - `UID`: User ID to run the server as (default: 1000)
 - `GID`: Group ID to run the server as (default: 1000)
+- `TZ`: [Timezone identifier](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List) for the container (default: Etc/UTC). Examples: `America/Chicago`, `Europe/London`, `Asia/Tokyo`
 
 ## Port Configuration
 
diff --git a/entrypoint.sh b/entrypoint.sh
index e159d16..25f8b76 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,6 +1,13 @@
 #!/bin/sh
 set -e
 
+# Set timezone
+if [ ! -z "$TZ" ]; then
+  echo "Setting timezone to $TZ"
+  ln -snf /usr/share/zoneinfo/$TZ /etc/localtime
+  echo $TZ > /etc/timezone
+fi
+
 echo "Setting up container with UID:${UID} and GID:${GID}"
 
 # Check if group with GID exists