it works!?

tutor/templates/build/openedx/Dockerfile

@@ -146,32 +146,27 @@ FROM nodejs-requirements as pre-assets
 # Gather minimal sources for webpacking JS into bundles
 # Copy the entire source tree, and then delete everything that isn't relevant.
 FROM pre-assets as js-sources
-COPY --link --from=edx-platform /lms lms
-COPY --link --from=edx-platform /cms cms
-COPY --link --from=edx-platform /common common
-COPY --link --from=edx-platform /openedx openedx
-COPY --link --from=edx-platform /xmodule xmodule
-RUN npm run postinstall  # Re-copy 'vendor' JS from node_modules into edx-platform source tree
-RUN find lms cms common openedx xmodule -type f -a \! \
-    \( -path '*/static/*' \
+COPY --link --from=edx-platform / .
+RUN find . -type f -a \! \
+    \( -path 'node_modules/*' \
+    -o -path '*/static/*' \
     -o -path '*/assets/*' \
     -o -path '*/js/*' \
     -o -name '*.underscore' \
+    -o -name '*.json' \
+    -o -name '*.js' \
+    -o -name '*.jsx' \
+    -o -name '.babelrc' \
     \) -delete 
-COPY --link --from=edx-platform /webpack-config webpack-config
-COPY --link --from=edx-platform /webpack.builtinblocks.config.js webpack.builtinblocks.config.js
-COPY --link --from=edx-platform /webpack.common.config.js webpack.common.config.js
 
 # Intermediate image to capture prod JS build
 FROM pre-assets as js-production
 COPY --link --from=js-sources /openedx/edx-platform /openedx/edx-platform
-COPY --link --from=edx-platform /webpack.prod.config.js webpack.prod.config.js
 RUN npm run webpack
 
 # Intermediate image to capture dev JS build
 FROM pre-assets as js-development
 COPY --link --from=js-sources /openedx/edx-platform /openedx/edx-platform
-COPY --link --from=edx-platform /webpack.dev.config.js webpack.dev.config.js
 RUN npm run webpack-dev
 
 # Gather minimal requirements and sources for compiling Sass into CSS