Add docker definitions

docker-compose.yml

@@ -0,0 +1,34 @@
+version: "3.9"
+   
+services:
+  app:
+    image: pathogen/threshold
+    build: .
+    volumes:
+      - .:/code
+    ports:
+      - "13867:13867"
+      - "13868:13868"
+      - "13869:13869"
+    # for development
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+
+  tmp:
+    image: busybox
+    command: chmod -R 777 /var/run/redis
+    volumes:
+        - /var/run/redis
+
+  redis:
+      image: redis
+      command: redis-server /etc/redis.conf
+      volumes:
+          - ./docker/redis.conf:/etc/redis.conf
+      volumes_from:
+          - tmp
+
+networks:
+   default:
+      external:
+         name: pathogen