diff --git a/Dockerfile b/Dockerfile
index ee9c3d0..f0eea09 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,2 +1,2 @@
-FROM postgres:9.6
+FROM postgres:12
 COPY create-multiple-postgresql-databases.sh /docker-entrypoint-initdb.d/
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..c8d21f6
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,5 @@
+build:
+	docker build -t pxuanbach/postgres-multiple-db .
+
+push:
+	docker push pxuanbach/postgres-multiple-db:latest
\ No newline at end of file