Build docker in ASP.NET Core: “no such file or directory” error

Question

I am using docker version 3, and .Net Core 2.0 web application.

This is my docker file:

FROM microsoft/aspnetcore:2.0
ARG source
WORKDIR /app
EXPOSE 80
COPY ${source:-obj/Docker/publish} .
ENTRYPOINT ["dotnet", "DotNetCoreWindowsTest.dll"]

and this is my docker-compose.yml file

version: '3'

    services:
      dotnetcorewindowstest:
        image: dotnetcorewindowstest
        build:
          context: ./DotNetCoreWindowsTest
          dockerfile: Dockerfile
        ports:
          - "3001:80"

I published my web application and from the published directory I run the command: docker-compose build and got the following error

ERROR: Service 'dotnetcorewindowstest' failed to build: 
COPY failed: stat /var/lib/docker/tmp/docker-builder739115341/obj/Docker/publish:
 no such file or directory

any ideas what is the problem?

herm · Accepted Answer · 2017-09-26 11:05:44Z

3

COPY ${source:-obj/Docker/publish} .

The source seems to be pointing to /var/lib/docker/tmp/docker-builder739115341/. Try the using a relative path instead and copy it into a speficif folder to avoid conflicts with whatever is in the root filesystem.

Copy obj/Docker/publish /app

edited Sep 26, 2017 at 11:05

answered Aug 28, 2017 at 8:51

herm

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2 Comments

Dan The Man Over a year ago

changed to : Copy obj/Docker/publish . still getting same error

herm Over a year ago

One more idea. could you try COPY obj/Docker/publish /app ?

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