Added recovery flag

app/__main__.py

@@ -7,6 +7,7 @@ from parser import read_specs_file
 parser = argparse.ArgumentParser(
     description="Backup directories and Docker volumes."
 )
+
 parser.add_argument(
     "-f",
     "--file",
@@ -15,6 +16,7 @@ parser.add_argument(
     required=True,
     help="File containing spec definitions.",
 )
+
 parser.add_argument(
     "-j",
     "--json",
@@ -23,6 +25,17 @@ parser.add_argument(
     default=False,
     help="Print out the parsed specs as JSON and exit",
 )
+
+parser.add_argument(
+    "-r",
+    "--recover",
+    action="append",
+    nargs=2,
+    metavar=("SPEC", "BACKUP"),
+    dest="recovers",
+    help="Recover the given spec; requires two arguments",
+)
+
 parser.add_argument(
     "spec", nargs="*", help="The specs to process. Defaults to all."
 )