organize workflows

.github/workflows/main.yml → .github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: CI
+name: Release Docker Images
 
 on:
   push:

.github/workflows/test.yml

@@ -1,6 +1,5 @@
 name: Node CI
 
-# on: [push]
 on:
   push:
     branches: