fix: Get latest custom server release from github correctly

Dockerfile

@@ -16,7 +16,7 @@ RUN wget -nv -q -O keepup.zip https://github.com/MineInAbyss/Keepup/releases/dow
 
 FROM itzg/minecraft-server:java21-graalvm as minecraft
 LABEL org.opencontainers.image.authors="Offz <[email protected]>"
-RUN dnf install -y ansible-core rclone wget unzip jq openssh
+RUN dnf install -y ansible-core rclone wget unzip jq openssh attr
 COPY --from=helper /keepup /usr/local
 ENV\
     KEEPUP=true\

scripts/dev/download_server

@@ -1,10 +1,26 @@
 #!/bin/sh
 set -e
 
-if [ "$CUSTOM_SERVER_URL" ]; then
-  if [ ! "$CUSTOM_SERVER" ]; then
-    export CUSTOM_SERVER=server.jar
+PREFIX="[Download Server]"
+if [ "$CUSTOM_SERVER_REPO" ]; then
+  [ ! "$CUSTOM_SERVER" ] && export CUSTOM_SERVER=./server.jar
+
+  echo "$PREFIX Checking for server updates from $CUSTOM_SERVER_REPO"
+
+  export LATEST_RELEASE_DATE=$(curl -s "https://api.github.com/repos/$CUSTOM_SERVER_REPO/releases/latest" | jq -r '.published_at' 2>/dev/null)
+  export CURRENT_RELEASE_DATE=$(getfattr --only-values -n user.release-date "$CUSTOM_SERVER" 2>/dev/null)
+
+  echo "$PREFIX Latest release date: $LATEST_RELEASE_DATE"
+  echo "$PREFIX Current release date: $CURRENT_RELEASE_DATE"
+
+  if [ "$LATEST_RELEASE_DATE" != "$CURRENT_RELEASE_DATE" ]; then
+    echo "$PREFIX Downloading new release, release date: $LATEST_RELEASE_DATE"
+    wget $(curl -s https://api.github.com/repos/$CUSTOM_SERVER_REPO/releases/latest  | jq -r '.assets[] | select(.name | contains ("jar")) | .browser_download_url')\
+      -q --show-progress -O "$CUSTOM_SERVER"
+
+    setfattr -n user.release-date -v "$LATEST_RELEASE_DATE" "$CUSTOM_SERVER"
+    chmod +x "$CUSTOM_SERVER"
+  else
+    echo "$PREFIX Server is up to date"
   fi
-  echo "Checking for server updates from $CUSTOM_SERVER_URL"
-  wget -N -q --show-progress "$CUSTOM_SERVER_URL" -c --output-document="$CUSTOM_SERVER"
 fi