Application in Docker container does not save file to docker volume - docker

Question

I am using Docker desktop to develop my application. I have created a "uploadedfiles" docker volume and I am trying to save files to it, from my docker application.
When I save a file from my docker application, I see that the file is saved to the "uploadedfiles" folder on my docker container. I am therefore assuming that I am not binding my application container to the created volume in my Dockerfile.Is my assumption correct?
How can I bind my application container to the created volume in my Dockerfile?
Dockerfile:
FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
COPY ["InstaTranscribeServerSide/InstaTranscribeServerSide.csproj", "InstaTranscribeServerSide/"]
COPY ["Services/Services.csproj", "Services/"]
COPY ["DataAccess/DataAccess.csproj", "DataAccess/"]
RUN dotnet restore "InstaTranscribeServerSide/InstaTranscribeServerSide.csproj"
COPY . .
WORKDIR "/src/InstaTranscribeServerSide"
RUN dotnet build "InstaTranscribeServerSide.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "InstaTranscribeServerSide.csproj" -c Release -o /app/publish
FROM base AS final
VOLUME CREATE uploadedfiles
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "InstaTranscribeServerSide.dll"]
Docker Volume does not show uploaded files
Container shows that the volume was not "bound"
Container shows file was uploaded to "uploadedfiles" folder on container:

Answer 1

I have successfully mount /home/ folder of my host to the /mnt folder of the existing (not running) container. You can do it in the following way:
Open configuration file corresponding to the stopped container, which can be found at /var/lib/docker/containers/99d...1fb/config.v2.json (may be config.json for older versions of docker).
Find MountPoints section, which was empty in my case: "MountPoints":{}. Next replace the contents with something like this (you can copy proper contents from another container with proper settings):
"MountPoints":{"/mnt":{"Source":"/home/<user-name>","Destination":"/mnt","RW":true,"Name":"","Driver":"","Type":"bind","Propagation":"rprivate","Spec":{"Type":"bind","Source":"/home/<user-name>","Target":"/mnt"},"SkipMountpointCreation":false}}
or the same (formatted):
"MountPoints": {
"/mnt": {
"Source": "/home/<user-name>",
"Destination": "/mnt",
"RW": true,
"Name": "",
"Driver": "",
"Type": "bind",
"Propagation": "rprivate",
"Spec": {
"Type": "bind",
"Source": "/home/<user-name>",
"Target": "/mnt"
},
"SkipMountpointCreation": false
}
}
Restart the docker service: service docker restart
This works for me with Ubuntu 18.04.1 and Docker 18.09.0