This issue is a similar issue to overhangio/tutor#997. The steps to reproduce are:

• Installed latest tutor master or nightly
• Clone any MFE repo (authn, learner-dashboard, etc.) and check out its appropriate branch (open-release/redwood.master if latest tutor master, master if tutor nightly)
• Add the cloned MFE as a bind mount
• Re-build mfe-dev images
• Run platform. Verify the mounted-MFE container runs into the error fedx-script not found
• Run npm install within cloned MFE repo on the host. Once installed, MFE dev container should be up and running.

Like the mentioned issue in tutor core, the bind-mounted MFE during image build does not get node_modules copied back to host. When running tutor, the host MFE directory without node_modules overrides the installed node_modules within image, thus resulting in fedx-script not found.

• Add a similar fix as core issue i.e. if node_modules are not found in MFE directory, run npm clean-install to install the required dependencies
  • If there is another fix, feel free to suggest it.