Set it so Docker image uses an empty database by default.

.gitignore

@@ -2,3 +2,4 @@
 py3env/
 __pycache__/
 config-personal.txt
+cards.db

README.md

@@ -82,7 +82,7 @@ __If you already had a backup file `cards.db`. Run following command:__
 `<path_to_folder_contains_cards_db>`: is the full path contains `cards.db`.
 Example: `/home/tinpee/cs-flash-cards/db`, and `cards.db` is inside this folder.
 
-For convenient, if you don't have `cards.db`, this container will auto copy a new one from `cards-jwasham.db`. So you don't need to `initdb`.
+For convenience, if you don't have `cards.db`, this container will auto copy a new one from `cards-empty.db`.
 
 ### How to backup data ?
 We just need store `cards.db` file, and don't need any sql command.

entrypoint.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [ ! -f /src/db/cards.db ]; then
-	cp cards-jwasham.db /src/db/cards.db
+	cp cards-empty.db /src/db/cards.db
 fi
 
 export CARDS_SETTINGS=/src/config.txt