Fix override example file

Author: danhalson

docker-compose.override.yml.example

@@ -0,0 +1,14 @@
+services:
+  api:
+    build:
+      context: .
+      target: dev-container
+    command: bash bin/docker-debug-entrypoint.sh
+    volumes:
+      # - ${HOME}/.bashrc:/root/.bashrc:ro # Map a ~/.bashrc in your home directory for customising bash
+      - ${HOME}/.ssh:/root/.ssh:ro # To share any ssh keys with the container
+      - /var/run/docker.sock:/var/run/docker.sock
+      - node_modules:/app/node_modules
+
+volumes:
+  node-modules: null