diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0dec61d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/package-lock.json
diff --git a/Dockerfile b/Dockerfile
index 1c94dfb..0883b3e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM postgres:10
+FROM postgres:11
 
 ENV POSTGRES_USER docker
 ENV POSTGRES_PASSWORD docker
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index 48e341a..0000000
--- a/package-lock.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "lockfileVersion": 1
-}