try using default Dockerfile

Author: mythz

Dockerfile

@@ -7,18 +7,13 @@ RUN curl -sL https://deb.nodesource.com/setup_14.x | bash - \
  && echo "npm version: $(npm --version)" \
  && rm -rf /var/lib/apt/lists/*
 
-COPY AngularSpa/package.json .
-COPY AngularSpa/npm-shrinkwrap.json .
-
-RUN npm --prefix AngularSpa install
-
 COPY . .
 RUN dotnet restore
 
 WORKDIR /app/AngularSpa
-RUN dotnet publish -c release -o /app --no-restore
+RUN dotnet publish -c release -o /out --no-restore
 
 FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS runtime
 WORKDIR /app
-COPY --from=build /app ./
-ENTRYPOINT ["dotnet", "AngularSpa.dll"]
+COPY --from=build /out ./
+ENTRYPOINT ["dotnet", "AngularSpa.dll"]