Rewrite deploy plugin in python to attempt to make it cross platform

run

@@ -1,9 +1,21 @@
-#!/bin/sh
-SOURCE=${PLUGIN_SOURCE:-.}
-TARGET=$PLUGIN_TARGET
+#!/usr/bin/env python3
+import os
+import tempfile
+import shutil
+import glob
+from subprocess import run
 
-mkdir /tmp/deploy
-cp -Rv $SOURCE /tmp/deploy
-echo "$PLUGIN_KEY" > /tmp/deploy.rsa
-chmod 0600 /tmp/deploy.rsa
-scp -i /tmp/deploy.rsa -o StrictHostKeyChecking=no -r /tmp/deploy/* $TARGET
+SOURCE = os.environ.get("PLUGIN_SOURCE", ".")
+TARGET = os.environ['PLUGIN_TARGET']
+
+def deploy(source, target, keyfile):
+    for source_file in glob.glob(source):
+        run(["scp", "-i", keyfile, "-o", "StrictHostKeyChecking=no", "-r", source_file, target])
+
+with tempfile.NamedTemporaryFile() as deploy_key:
+    deploy_key.write(os.environ['PLUGIN_KEY'].encode())
+    deploy_key.write(b"\n")
+    deploy_key.flush()
+
+    os.chmod(deploy_key.name, 0o600)
+    deploy(SOURCE, TARGET, deploy_key.name)