Improve usage of pg_dump in backup

playbooks/roles/backup/files/recovery/postgresql

@@ -3,10 +3,11 @@
 set -e
 
 target="$1"
-recovery_file="pg_dumpall.sql.gz"
-if [ -n "$target" ]; then
-	recovery_file="pg_dump_$target.sql.gz"
+if [ -z "$target" ]; then
+  echo "No target given!"
+  exit 1
 fi
+recovery_file="pg_dump_$target.dump"
 
 tmp_dir=$(mktemp -d)
 recovery_file_path="$tmp_dir/opt/services/_backup/postgresql/$recovery_file"
@@ -20,9 +21,7 @@ echo "Backup restored."
 echo "Recovery file: $recovery_file"
 
 echo "Restoring database..."
-cat "$recovery_file_path" \
-  | gunzip \
-  | sudo -u postgres psql
+sudo -u postgres pg_restore -C "$recovery_file_path"
 echo "Database restored."
 
 echo "Removing temporary files..."