modify dockefile to work

Dockerfile

@@ -19,7 +19,7 @@ COPY . /myapp
 # Building the frontend assets from the frontend directory
 # the project.json specifies a build path so they will be built into the /public/static directory and rails can serve them
 WORKDIR /myapp/frontend
-RUN npm install && npm run build
+RUN npm install --legacy-peer-deps && npm run build
 #
 WORKDIR /myapp
 

config/application.rb

@@ -18,6 +18,13 @@ class Application < Rails::Application
     config.middleware.use ActionDispatch::Cookies
 
     config.middleware.use config.session_store, config.session_options
+
+    config.middleware.insert_before 0, Rack::Cors do
+      allow do
+        origins '*'
+        resource '*', :headers => :any, :methods => [:get, :post, :patch, :put, :options]
+      end
+    end
     # Configuration for the application, engines, and railties goes here.
     #
     # These settings can be overridden in specific environments using the files