Enhance backup scripts with error handling and directory checks

backups/scripts/gitea-dump.sh

@@ -1,12 +1,29 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -Eeuo pipefail
+
+trap 'echo "Error on line $LINENO while writing Gitea dump" >&2' ERR
+
+ensure_writable_dir() {
+	local dir="$1"
+	mkdir -p "$dir"
+	if [[ ! -d "$dir" || ! -w "$dir" ]]; then
+		echo "Output directory is not writable: $dir" >&2
+		exit 1
+	fi
+}
 
 TS="$(date +%F_%H%M%S)"
 OUT="/srv/backups/gitea/dumps"
-mkdir -p "$OUT"
+ensure_writable_dir "$OUT"
+artifact="$OUT/gitea-dump-$TS.zip"
 
 docker exec gitea sh -lc "gitea dump -c /data/gitea/conf/app.ini -f /tmp/gitea-dump-$TS.zip"
 docker cp "gitea:/tmp/gitea-dump-$TS.zip" "$OUT/"
 docker exec gitea rm -f "/tmp/gitea-dump-$TS.zip"
 
-echo "Wrote: $OUT/gitea-dump-$TS.zip"
+if [[ ! -s "$artifact" ]]; then
+	echo "Backup artifact missing or empty: $artifact" >&2
+	exit 1
+fi
+
+echo "Wrote: $artifact"