Cron update

Dockerfile

@@ -42,11 +42,15 @@ ENV PORT= \
     TZ=UTC \
     SERVER_DESCRIPTION= \
     BACKUP_ENABLED=true \
-    BACKUP_CRON_EXPRESSION="0 0 * * *"
+    BACKUP_CRON_EXPRESSION="0 0 * * *" \
+    UPDATE_ENABLED=false \
+    UPDATE_CRON_EXPRESSION="0 * * * *" \
+    WARN_MINUTES=30
 
 COPY ./scripts/* /home/steam/server/
-RUN chmod +x /home/steam/server/init.sh /home/steam/server/start.sh /home/steam/server/backup.sh && \
-    mv /home/steam/server/backup.sh /usr/local/bin/backup
+RUN chmod +x /home/steam/server/init.sh /home/steam/server/start.sh /home/steam/server/backup.sh /home/steam/server/update.sh && \
+    mv /home/steam/server/backup.sh /usr/local/bin/backup && \
+    mv /home/steam/server/update.sh /usr/local/bin/update
 
 WORKDIR /home/steam/server
 

README.md

@@ -177,6 +177,9 @@
 | BACKUP_ENABLED | Enables automatic backups | true | true/false |
 | DELETE_OLD_BACKUPS | Delete backups after a certain number of days                                                                                                                                                       | false          | true/false                                                                                                 |
 | OLD_BACKUP_DAYS    | How many days to keep backups                                                                                                                                                                       | 30             | any positive integer                                                                                       |
+| UPDATE_CRON_EXPRESSION  | Setting affects frequency of automatic updates. | 0 0 \* \* \* | Needs a Cron-Expression - See [Configuring Automatic Backups with Cron](#configuring-automatic-backups-with-cron) |
+| UPDATE_ENABLED | Enables automatic updates | true | true/false |
+| WARN_MINUTES | How long to wait to update the server, after the player were informed. | 30 | !0 |
 
 *highly recommended to set
 
@@ -260,6 +263,24 @@
 Set BACKUP_CRON_EXPRESSION to change the default schedule.
 Example Usage: If BACKUP_CRON_EXPRESSION to `0 2 * * *`, the backup script will run every day at 2:00 AM.
 
+## Configuring Automatic Updates with Cron
+
+To be able to use automatic Updates with this Server the following environment variables **have** to be set to `true`:
+* RCON_ENABLED
+* UPDATE_ON_BOOT
+
+Set UPDATE_ENABLED enable or disable automatic backups (Default is disabled)
+
+UPDATE_CRON_EXPRESSION is a cron expression, in a Cron-Expression you define an interval for when to run jobs.
+
+> [!TIP]
+> This image uses Supercronic for crons
+> see [supercronic](https://github.com/aptible/supercronic#crontab-format)
+> or
+> [Crontab Generat](https://crontab-generator.org).
+
+Set UPDATE_CRON_EXPRESSION to change the default schedule.
+
 ## Editing Server Settings
 
 ### With Environment Variables

scripts/start.sh

@@ -292,7 +292,15 @@ fi
 if [ "${BACKUP_ENABLED}" = true ]; then
     echo "BACKUP_ENABLED=${BACKUP_ENABLED}"
 
-    echo "$BACKUP_CRON_EXPRESSION bash /usr/local/bin/backup" > "/home/steam/server/crontab"
+    echo "$BACKUP_CRON_EXPRESSION bash /usr/local/bin/backup" >> "/home/steam/server/crontab"
+fi
+
+if [ "${UPDATE_ENABLED}" = true ]; then
+    echo "UPDATE_ENABLED=${UPDATE_ENABLED}"
+    echo "$UPDATE_CRON_EXPRESSION bash /usr/local/bin/update" >> "/home/steam/server/crontab"
+fi
+
+if [ "${UPDATE_ENABLED}" = true ] || [ "${BACKUP_ENABLED}" = true ]; then
     supercronic "/home/steam/server/crontab" &
 fi
 

scripts/update.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+if [ "${UPDATE_ON_BOOT}" = false ]; then
+    echo "Update on Boot needs to be enabled for auto updating"
+    exit 1
+fi
+
+CURRENTBUILD=$(awk '/buildid/{ print $2 }' < palworld/steamapps/appmanifest_2394010.acf)
+TARGETBUILD=$(curl https://api.steamcmd.net/v1/info/2394010 --silent | grep -P '"public": {"buildid": "\d+"' -o | sed -r 's/.*("[0-9]+")$/\1/')
+
+if [ "$CURRENTBUILD" != "$TARGETBUILD" ]; then
+    echo "New Build was found. Updating the server from $CURRENTBUILD to $TARGETBUILD."
+    if [ "${RCON_ENABLED}" = true ]; then
+        rm /palworld/steamapps/appmanifest_2394010.acf
+        rcon-cli -c /home/steam/server/rcon.yaml "broadcast The_Server_will_update_in_${WARN_MINUTES}_Minutes"
+        sleep "${WARN_MINUTES}m"
+        rcon-cli -c /home/steam/server/rcon.yaml save
+        rcon-cli -c /home/steam/server/rcon.yaml "shutdown 1"
+    else
+        kill -SIGTERM "$(pidof PalServer-Linux-Test)"
+    fi
+else
+    echo "The Server is up to date!"
+fi