latest python in Dockerfile & add docker compose

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:alpine3.4
+FROM python:alpine
 
 RUN apk add --no-cache gettext
 

docker-compose.yml

@@ -0,0 +1,8 @@
+version: "3.9"
+services:
+  unobot:
+    container_name: unobot
+    build:
+      context: .
+      dockerfile: Dockerfile
+    restart: unless-stopped