add gotify

Docker/gotify/docker-compose.yml

@@ -0,0 +1,20 @@
+version: "3"
+
+services:
+  gotify:
+    container_name: gotify
+    ports:
+      - 7099:80
+    environment:
+      - GOTIFY_DEFAULTUSER_PASS=custom
+    volumes:
+      - "./gotify_data:/app/data"
+    image: gotify/server
+    networks:
+      nginx:
+        aliases:
+          - gotify
+
+networks:
+  nginx:
+    external: true