I'm new in docker and I have a problem I can't deal with. I created .net core MVC application and this app is supposed to work on raspberry pi, so I dockerized my app on raspberry on HypriotOS and everything is good, but some images from wwwroot (default static files folder) is not Found (404). In wwwroot folder I have some css, js and images files and css, js and few images are available, but few .png files no. I don't have idea why.

• .net core version is 2.2
• I tired add line VOLUME ["/wwwroot"] in my Dockerfile
• in Startup.Configure() method I have line app.UseStaticFiles();

My Dockerfile

FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
WORKDIR /app

# copy csproj and restore as distinct layers
COPY *.csproj ./
RUN dotnet restore

# copy everything else and build app
COPY . ./
RUN dotnet publish -c Release -o out

FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime
WORKDIR /app
COPY --from=build /app/out .
ENTRYPOINT ["dotnet", "TestApp.dll"]

Commands to build and run Docker image:

docker build -t testapp .
docker run  -p 8080:80 --name testapp testapp

Dockerize passes correctly, no errors. The application is accessible from the outside, everything works, but some graphics are not displayed (404 Not Found).