move dockerfile, docker-compose.yml to docker folder

docker/docker-compose.yml

@@ -0,0 +1,13 @@
+# Simple docker-composer.yml
+# You can change your port or volume location
+
+version: '3.3'
+
+services:
+  uptime-kuma:
+    image: louislam/uptime-kuma
+    container_name: uptime-kuma
+    volumes:
+      - ./uptime-kuma:/app/data
+    ports:
+      - 3001:3001