Add docker-updater script and streamline crontab setup for multiple files

docker-updater.sh

@@ -0,0 +1,71 @@
+#!/bin/bash
+
+### AUTO-UPDATER ###
+# Variables
+FILE_NAME="docker-updater.sh"
+SERVER_FILE="https://git.ivanch.me/ivanch/server-scripts/raw/branch/main/$FILE_NAME"
+SERVER_OK=1
+
+# Check if the server file exists
+curl -s --head $SERVER_FILE | head -n 1 | grep -E "HTTP/[12] [23].." > /dev/null
+
+if [ $? -ne 0 ]; then
+    echo "Error: $SERVER_FILE not found." >&2
+    SERVER_OK=0
+fi
+
+if [ $SERVER_OK -eq 1 ]; then
+    echo "Running auto-update..."
+
+    # Compare the local and server files sha256sum to check if an update is needed
+    LOCAL_SHA256=$(sha256sum $FILE_NAME | awk '{print $1}')
+    SERVER_SHA256=$(curl -s $SERVER_FILE | sha256sum | awk '{print $1}')
+
+    if [ "$LOCAL_SHA256" != "$SERVER_SHA256" ]; then
+        echo "Updating $FILE_NAME..."
+        curl -s -o $FILE_NAME $SERVER_FILE
+        echo "$FILE_NAME updated."
+
+        chmod +x $FILE_NAME
+        echo "Permissions set up."
+
+        echo "Running updated $FILE_NAME..."
+        ./$FILE_NAME
+        exit 0
+    else
+        echo "$FILE_NAME is up to date.."
+    fi
+fi
+
+####################
+
+# Navigate to docker folder
+DOCKER_FOLDER=/root/docker
+
+if [ -d "$DOCKER_FOLDER" ]; then
+    cd $DOCKER_FOLDER
+else
+    echo "Error: $DOCKER_FOLDER not found." >&2
+    exit 1
+fi
+
+# Navigate on each folder and run docker-compose stop, pull and up -d
+
+for folder in */; do
+    cd $folder
+    echo "Updating $folder..."
+    docker-compose down
+    docker-compose pull
+    docker-compose up -d
+
+    echo "Updated $folder!"
+
+    cd ..
+done
+
+# Run Docker image prune
+
+echo "Running Docker image prune..."
+docker image prune -af
+
+echo "Done."