diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..fc4d1eb
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,7 @@
+db.sqlite3
+local_settings.py
+settings_local.py
+
+**/__pycache__/
+**/*.py[cod]
+**/*$py.class
diff --git a/Dockerfile b/Dockerfile
index baf6825..1d9746c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,8 +16,7 @@ COPY . ./
 
 ENV DJANGO_SETTINGS_MODULE=hackdb.settings_docker
 
-RUN rm -f db.sqlite3 local_settings.py settings_local.py \
-    && useradd django \
+RUN useradd django \
     && python manage.py check \
     && python manage.py makemigrations