Dockerfile build image fail

Question

Project Structure:

Syslog.Sample --docker.Sample --Syslog.Sample

Project "docker.Sample" -> Add Docker support. This is the content of the generated Dockerfile:

FROM mcr.microsoft.com/dotnet/core/runtime:3.1-buster-slim AS base WORKDIR /app FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build WORKDIR /src COPY ["docker.Sample/docker.Sample.csproj", "docker.Sample/"] RUN dotnet restore "docker.Sample/docker.Sample.csproj" COPY . . WORKDIR "/src/docker.Sample" RUN dotnet build "docker.Sample.csproj" -c Release -o /app/build FROM build AS publish RUN dotnet publish "docker.Sample.csproj" -c Release -o /app/publish FROM base AS final WORKDIR /app COPY --from=publish /app/publish . ENTRYPOINT ["dotnet", "docker.Sample.dll"]

Run command "docker build ."

output fail context message:

failed to solve with frontend dockerfile.v0: failed to build LLB: failed to compute cache key: "/docker.Sample/docker.Sample.csproj" not found: not found

help me

Looks like this line is wrong: COPY ["docker.Sample/docker.Sample.csproj", "docker.Sample/"] — Kroustou
– Kroustou, Commented Nov 30, 2020 at 8:18

Matt Thalman · Accepted Answer · 2021-05-11 20:35:43Z

This is how I made it work: change this

COPY ["docker.Sample/docker.Sample.csproj", "docker.Sample/"]

to this

COPY ["docker.Sample.csproj", "docker.Sample/"].

Remove the directory name of the csproj. For some reason the default Dockerfile created by VS is faulty.

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