restructure for docker

forum/tool.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+import sys, password
+
+
+def arg(i, s):
+    if i < len(sys.argv):
+        return sys.argv[i]
+    print(s)
+    sys.exit(1)
+
+
+def arg_last(i, s):
+    if i == len(sys.argv) - 1:
+        return sys.argv[i]
+    print(s)
+    sys.exit(1)
+
+
+proc = "tool.py" if len(sys.argv) < 1 else sys.argv[0]
+cmd = arg(1, f"usage: {proc} <command> [...]")
+
+if cmd == "password":
+    pwd = arg_last(2, "usage: {proc} password <pwd>")
+    print(password.hash(pwd))
+else:
+    print("unknown command ", cmd)
+    sys.exit(1)