added backup script

backup.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -euo pipefail
+
+# Where this script lives (Forgejo project root)
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+BACKUP_DIR="$SCRIPT_DIR/backup"
+TIMESTAMP="$(date +%Y-%m-%d_%H-%M-%S)"
+BACKUP_FILE="$BACKUP_DIR/forgejo-backup-${TIMESTAMP}.tar.gz"
+
+echo "=== Forgejo backup ==="
+echo "Project dir : $SCRIPT_DIR"
+echo "Backup dir  : $BACKUP_DIR"
+echo "Backup file : $BACKUP_FILE"
+echo
+
+# 1) Ensure backup dir exists
+mkdir -p "$BACKUP_DIR"
+
+# 2) Stop Forgejo (short downtime, but consistent backup)
+echo "[1/3] Stopping Forgejo containers..."
+docker compose down
+
+# 3) Create archive of data + config
+#    Adjust the list if you add more config files
+echo "[2/3] Creating backup archive..."
+tar -czf "$BACKUP_FILE" \
+  forgejo \
+  docker-compose.yml \
+  .gitignore \
+  README.md \
+  .git 2>/dev/null || true  # ignore .git if it causes trouble
+
+echo "[OK] Backup created: $BACKUP_FILE"
+
+# 4) Start Forgejo again
+echo "[3/3] Starting Forgejo containers..."
+docker compose up -d
+
+echo "=== Done ==="
+
+# 5) Optional: keep only last 7 backups, delete older ones
+echo "Cleaning up old backups (keep last 7)..."
+ls -1t "$BACKUP_DIR"/forgejo-backup-*.tar.gz 2>/dev/null | tail -n +8 | xargs -r rm -f
+
+echo "Backup finished successfully."