Refactored file structure to fix docker build, fixed Unfold configuration.

app/theme/static_src/postcss.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  plugins: {
+    "postcss-import": {},
+    "postcss-simple-vars": {},
+    "postcss-nested": {}
+  },
+}