Make environment ready for Docker

docker/docker-compose.prod.yml

@@ -0,0 +1,17 @@
+version: "2"
+   
+services:
+  app:
+    image: pathogen/neptune
+    build: ./docker
+    volumes:
+      - ${PORTAINER_GIT_DIR}:/code
+    ports:
+      - "${NEPTUNE_PORT}:8000"
+    env_file:
+      - ../stack.env
+
+networks:
+   default:
+      external:
+         name: pathogen