add: docker

docker-compose.yml

@@ -0,0 +1,16 @@
+version: '3.8'
+
+name: ca42
+
+services:
+  flask:
+    build: .
+    image: ca42
+    container_name: flask
+    restart: always
+    volumes:
+      - type: bind
+        source: .
+        target: /app
+    ports:
+      - 5000:5000