add git pull worker

server/git_pull.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/expect
+
+set timeout 30
+
+if { $env(password_env) eq "" } {
+    send_user "password_env is empty\n"
+    exit 1
+}
+log_user 0
+cd ./cofffeemachineConfig
+spawn git pull
+expect {
+    "ikong@192.168.10.159's password:" {
+        send "$env(password_env)\n"
+        expect {
+            "Already up to date." {
+                log_user 1
+                send_user "Already up to date."
+            }
+            "remote:" {
+                log_user 1
+                send_user "Coffee recipe updated."
+            }
+        }
+    }
+}