C#•5mo ago

Can not create Docker Image in Terminal using DockerFile

Hi, I am trying to dockerize my microservice application and my identityserver runs on 3.1 sdk because it is free version. I have the default visual studio's dockerfile and when I start project using visual studio with dockerfile it runs there is no problem. Hence i try to build image on my terminal i get this error and could not find the proper solution.

5 Replies

Batuhan•5mo ago

My Dockerfile

FROM mcr.microsoft.com/dotnet/aspnet:3.1 AS base
WORKDIR /app
EXPOSE 5002
EXPOSE 5003

FROM mcr.microsoft.com/dotnet/sdk:3.1 AS build
ARG BUILD_CONFIGURATION=Release
WORKDIR /src
COPY ["IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj", "IdentityServer/Course.IdentityServer/"]
RUN dotnet restore "./IdentityServer/Course.IdentityServer/./Course.IdentityServer.csproj"
COPY . .
WORKDIR "/src/IdentityServer/Course.IdentityServer"
RUN dotnet build "./Course.IdentityServer.csproj" -c $BUILD_CONFIGURATION -o /app/build

FROM build AS publish
ARG BUILD_CONFIGURATION=Release
RUN dotnet publish "./Course.IdentityServer.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Course.IdentityServer.dll"]

FROM mcr.microsoft.com/dotnet/aspnet:3.1 AS base
WORKDIR /app
EXPOSE 5002
EXPOSE 5003

FROM mcr.microsoft.com/dotnet/sdk:3.1 AS build
ARG BUILD_CONFIGURATION=Release
WORKDIR /src
COPY ["IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj", "IdentityServer/Course.IdentityServer/"]
RUN dotnet restore "./IdentityServer/Course.IdentityServer/./Course.IdentityServer.csproj"
COPY . .
WORKDIR "/src/IdentityServer/Course.IdentityServer"
RUN dotnet build "./Course.IdentityServer.csproj" -c $BUILD_CONFIGURATION -o /app/build

FROM build AS publish
ARG BUILD_CONFIGURATION=Release
RUN dotnet publish "./Course.IdentityServer.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Course.IdentityServer.dll"]

and this is the error i get

=> ERROR [build 3/7] COPY [IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj, IdentityServer/Course.IdentityServer/]                                                                                                                                0.0s
------
> [build 3/7] COPY [IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj, IdentityServer/Course.IdentityServer/]:
------
Dockerfile:9
--------------------
   7 |     ARG BUILD_CONFIGURATION=Release
   8 |     WORKDIR /src
   9 | >>> COPY ["IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj", "IdentityServer/Course.IdentityServer/"]
  10 |     RUN dotnet restore "./IdentityServer/Course.IdentityServer/./Course.IdentityServer.csproj"
  11 |     COPY . .
--------------------
ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref bbe3e021-99e0-463c-b63f-1efe01732795::xx41dfzv9hzte05cgw51kjojl: "/IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj": not found

=> ERROR [build 3/7] COPY [IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj, IdentityServer/Course.IdentityServer/]                                                                                                                                0.0s
------
> [build 3/7] COPY [IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj, IdentityServer/Course.IdentityServer/]:
------
Dockerfile:9
--------------------
   7 |     ARG BUILD_CONFIGURATION=Release
   8 |     WORKDIR /src
   9 | >>> COPY ["IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj", "IdentityServer/Course.IdentityServer/"]
  10 |     RUN dotnet restore "./IdentityServer/Course.IdentityServer/./Course.IdentityServer.csproj"
  11 |     COPY . .
--------------------
ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref bbe3e021-99e0-463c-b63f-1efe01732795::xx41dfzv9hzte05cgw51kjojl: "/IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj": not found

also my command

docker build -t aspnetcoreapp .

docker build -t aspnetcoreapp .

Xymanek•5mo ago

Use triple backticks for code blocks (easier to read) $code

MODiX•5mo ago

To post C# code type the following: ```cs // code here ``` Get an example by typing $codegif in chat For longer snippets, use: https://paste.mod.gg/

Batuhan•5mo ago

thanks for the advice

Xymanek•5mo ago

"/IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj": not found

"/IdentityServer/Course.IdentityServer/Course.IdentityServer.csproj": not found

That's the error

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Can not create Docker Image in Terminal using DockerFile