improve docker compose config for frontend e2e testing

frontend/Dockerfile

@@ -93,13 +93,10 @@ RUN npm run build
 ##################################################################################
 # TEST ###########################################################################
 ##################################################################################
-#FROM build as test
-
-# Install Additional Software
-# RUN apk add --no-cache bash jq
+FROM build as test
 
 # Run command
-#CMD /bin/sh -c "yarn run dev"
+CMD /bin/sh -c "npm run server:prod"
 
 ##################################################################################
 # PRODUCTION (Does contain only "binary"- and static-files to reduce image size) #

frontend/docker-compose.test.yml

@@ -7,15 +7,9 @@ services:
   frontend:
     image: it4c/frontend:local-test
     build:
-      target: production
+      target: test
     environment:
       - NODE_ENV=production
-    volumes:
-      # This makes sure the docker container has its own node modules.
-      # Therefore it is possible to have a different node version on the host machine
-      - frontend_node_modules:/app/node_modules
-      # bind the local folder to the docker to allow live reload
-      - ./:/app
 
 volumes:
   frontend_node_modules: