Fix Dockerfile permission issues

frontend/Dockerfile

@@ -7,14 +7,10 @@ USER $USER
 
 WORKDIR /home/$USER/
 
-COPY package*.json ./
+COPY --chown=$USER package*.json ./
 RUN npm install
 
-COPY --chown=$USER . .
-RUN ls -lah
-
-ENV PORT 8430
-EXPOSE 8430
+COPY --chown=$USER . ./
 
 ENV PORT 8430
 EXPOSE 8430

server/Dockerfile

 FROM python:3.9.1-alpine3.12
 
 ARG USER=default
-
 RUN adduser -D $USER
-
 USER $USER
 WORKDIR /home/$USER
 
-ADD . /
+COPY --chown=$USER:$USER . ./
+
 RUN pip3 install --user -r ./requirements.txt
 
+EXPOSE 8432
+
 CMD ["./server.py"]