Clean things up

main.py

@@ -17,6 +17,10 @@ access_token = os.environ.get("access_token")
 access_token_secret = os.environ.get("access_token_secret")
 bearer_token = os.environ.get("bearer_token")
 
+home_path = os.environ.get("HOME")
+last_id_filepath = home_path + "/app/last_id.txt"
+
+
 client = tweepy.Client(
     bearer_token=bearer_token,
     consumer_key=consumer_key,
@@ -74,7 +78,7 @@ def toast(text):
 
 
 def reply_to_mentions():
-    since_id = get_last_tweet("/home/user/app/last_id.txt")
+    since_id = get_last_tweet(last_id_filepath)
     mentions = client.get_users_mentions(
         id=1612106815096999936,
         since_id=since_id,
@@ -118,7 +122,7 @@ def reply_to_mentions():
             logger.error(e)
             continue
 
-    put_last_tweet("/home/user/app/last_id.txt", mention.id)
+    put_last_tweet(last_id_filepath, mention.id)
 
 
 def main():