Publish an ASP.Net Core 3 preview 6 to Azure

Question

I'm trying to develop a web application using AspNetCore3 preview6.19307.2 and I would to publish on my Azure WebApp.

Isn't my first try to publish a preview version of AspNetCore 3. For an unknown reason, I can't. The WebApp app said me that it can't start (Internal Server Error).

In Kudu console, when I've try AspNetCore3 Preview5, I've install the ASP.NET Core 3.0 (x64) Runtime (version 3.0.0-preview5-19227-01).

Now, since Preview6, no extension exists for this release.

I therefore tried to use the app on Docker.

I tried several dockerfiles including:

Generated by Visual Studio:

FROM mcr.microsoft.com/dotnet/core/runtime:3.0-buster-slim-arm64v8 AS base
WORKDIR /app
EXPOSE 80

# Install ASP.NET Core
ENV ASPNETCORE_VERSION 3.0.0-preview6.19307.2

FROM mcr.microsoft.com/dotnet/core/sdk:3.0-buster AS build
WORKDIR /src
COPY ["IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj", "IdeaStudio.Web.Server/"]
COPY ["IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj", "IdeaStudio.Web.Client/"]
COPY ["IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj", "IdeaStudio.Web.Shared/"]
RUN dotnet restore "IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj"
COPY . .
WORKDIR "/src/IdeaStudio.Web.Server"
RUN dotnet build "IdeaStudio.Web.Server.csproj" -c Release -o /app

FROM build AS publish
RUN dotnet publish "IdeaStudio.Web.Server.csproj" -c Release -o /app

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

https://github.com/dotnet/dotnet-docker/blob/master/3.0/sdk/buster/amd64/Dockerfile
https://github.com/dotnet/dotnet-docker/blob/master/3.0/aspnet/buster-slim/amd64/Dockerfile
...several from this repository: https://github.com/dotnet/dotnet-docker/ or the Visual Studio dockerfile with other urls of docker images found in this repository.

The first one logs:

1>------ Build started: Project: IdeaStudio.Web.Server, Configuration: Debug Any CPU ------
...
1>docker run -dt -v "C:\Users\andre\vsdbg\vs2017u5:/remote_debugger:rw" -v "D:\Repos\IdeaStudio.Web\IdeaStudio.Web.Server:/app" -v "C:\Users\andre\.nuget\packages\:/root/.nuget/fallbackpackages3" -v "C:\Microsoft\Xamarin\NuGet\:/root/.nuget/fallbackpackages" -v "C:\Program Files\dotnet\sdk\NuGetFallbackFolder:/root/.nuget/fallbackpackages2" -e "DOTNET_USE_POLLING_FILE_WATCHER=1" -e "ASPNETCORE_ENVIRONMENT=Development" -e "NUGET_PACKAGES=/root/.nuget/fallbackpackages3" -e "NUGET_FALLBACK_PACKAGES=/root/.nuget/fallbackpackages;/root/.nuget/fallbackpackages2;/root/.nuget/fallbackpackages3" -p 50793:80 --entrypoint tail ideastudiowebserver:dev -f /dev/null
1>259a71fe9c5e97288455ce841990821bcc4745ac11016b140e36950a6a49e1a3
1>docker: Error response from daemon: driver failed programming external connectivity on endpoint amazing_cocks (56655f71f121511a010d160258f20026756cf13a08014626064fdebc94709c1d): Error starting userland proxy: mkdir /port/tcp:0.0.0.0:50793:tcp:172.17.0.2:80: input/output error.
1>C:\Users\andre\.nuget\packages\microsoft.visualstudio.azure.containers.tools.targets\1.7.11\build\Container.targets(196,5): error CTP1002: An error occurred while attempting to run Docker container.

Update 1

In my last try, I've tried with VSCode and a terminal : docker build -t ideastudio -f Dockerfile .

I've another error:

error MSB6003: The specified task executable "node" could not be run. System.ComponentModel.Win32Exception (2): No such file or directory [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]

Initially, my DOCKERFILE was added in /src/Ideatudio.Web.Server folder. Before this message, the tree of my files looked like

- IdeaStudio.Web.Client\ (csproj and files)
- IdeaStudio.Web.Server\ (csproj and files)
    - DOCKERFILE
- IdeaStudio.Web.Shared\...

After:

- IdeaStudio.Web.Client\ (csproj and files)
- IdeaStudio.Web.Server\ (csproj and files)
- IdeaStudio.Web.Shared\...
- DOCKERFILE

I've the same error...

Update 2

I have restore the original version of docker file (generated by Visual Studio) in D:\repos\IdeaStudio.Web\src\IdeaStudio.Web.Server\DOCKERFILE :

FROM mcr.microsoft.com/dotnet/core/aspnet:3.0-buster-slim AS base
WORKDIR /app
EXPOSE 80

FROM mcr.microsoft.com/dotnet/core/sdk:3.0-buster AS build
WORKDIR /src
COPY ["IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj", "IdeaStudio.Web.Server/"]
COPY ["IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj", "IdeaStudio.Web.Client/"]
COPY ["IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj", "IdeaStudio.Web.Shared/"]
RUN dotnet restore "IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj"
COPY . .
WORKDIR "/src/IdeaStudio.Web.Server"
RUN dotnet build "IdeaStudio.Web.Server.csproj" -c Release -o /app

FROM build AS publish
RUN dotnet publish "IdeaStudio.Web.Server.csproj" -c Release -o /app

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

My logs:

D:\Repos\IdeaStudio.Web\src\IdeaStudio.Web.Server>docker build -t ideastudioserver -f Dockerfile .
Sending build context to Docker daemon  3.224MB
Step 1/18 : FROM mcr.microsoft.com/dotnet/core/aspnet:3.0-buster-slim AS base
 ---> 535a4f32905a
Step 2/18 : WORKDIR /app
 ---> Running in c949c41906a2
Removing intermediate container c949c41906a2
 ---> 7e4f125c7680
Step 3/18 : EXPOSE 80
 ---> Running in 78304b88cdeb
Removing intermediate container 78304b88cdeb
 ---> b3498af84ab1
Step 4/18 : FROM mcr.microsoft.com/dotnet/core/sdk:3.0-buster AS build
 ---> 1fe3bc74dd1b
Step 5/18 : WORKDIR /src
 ---> Using cache
 ---> ac9cfd234501
Step 6/18 : COPY ["IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj", "IdeaStudio.Web.Server/"]
COPY failed: stat /var/lib/docker/tmp/docker-builder106022311/IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj: no such file or directory

When I move it to D:\repos\IdeaStudio.Web\src\DOCKERFILE:

D:\Repos\IdeaStudio.Web\src>docker build -t ideastudioserver -f Dockerfile .
Sending build context to Docker daemon  48.93MB
Step 1/18 : FROM mcr.microsoft.com/dotnet/core/aspnet:3.0-buster-slim AS base
 ---> 535a4f32905a
Step 2/18 : WORKDIR /app
 ---> Using cache
 ---> 7e4f125c7680
Step 3/18 : EXPOSE 80
 ---> Using cache
 ---> b3498af84ab1
Step 4/18 : FROM mcr.microsoft.com/dotnet/core/sdk:3.0-buster AS build
 ---> 1fe3bc74dd1b
Step 5/18 : WORKDIR /src
 ---> Using cache
 ---> ac9cfd234501
Step 6/18 : COPY ["IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj", "IdeaStudio.Web.Server/"]
 ---> c258e7588817
Step 7/18 : COPY ["IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj", "IdeaStudio.Web.Client/"]
 ---> 73d1ce9fcd0a
Step 8/18 : COPY ["IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj", "IdeaStudio.Web.Shared/"]
 ---> fb4cdea5ed62
Step 9/18 : RUN dotnet restore "IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj"
 ---> Running in f7452d7650cf
  Restore completed in 5.7 sec for /src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj.
  Restore completed in 4.23 ms for /src/IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj.
  Restore completed in 6.17 sec for /src/IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj.
Removing intermediate container f7452d7650cf
 ---> 5720a6dea18d
Step 10/18 : COPY . .
 ---> 86ef33c9acaf
Step 11/18 : WORKDIR "/src/IdeaStudio.Web.Server"
 ---> Running in a2581bbcbece
Removing intermediate container a2581bbcbece
 ---> be52c244051d
Step 12/18 : RUN dotnet build "IdeaStudio.Web.Server.csproj" -c Release -o /app
 ---> Running in e43ee85a4a35
Microsoft (R) Build Engine version 16.2.0-preview-19278-01+d635043bd for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 25.27 ms for /src/IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj.
  Restore completed in 24.18 ms for /src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj.
  Restore completed in 0.65 ms for /src/IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj.
/usr/share/dotnet/sdk/3.0.100-preview6-012264/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(158,5): message NETSDK1057: You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview [/src/IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj]
/usr/share/dotnet/sdk/3.0.100-preview6-012264/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(158,5): message NETSDK1057: You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview [/src/IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj]
  IdeaStudio.Web.Shared -> /app/IdeaStudio.Web.Shared.dll
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003: The specified task executable "node" could not be run. System.ComponentModel.Win32Exception (2): No such file or directory [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at System.Diagnostics.Process.ForkAndExecProcess(String filename, String[] argv, String[] envp, String cwd, Boolean redirectStdin, Boolean redirectStdout, Boolean redirectStderr, Boolean 
setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, Int32& stdinFd, Int32& stdoutFd, Int32& stderrFd, Boolean usesTerminal, Boolean throwOnNoExec) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at System.Diagnostics.Process.Start() [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at Microsoft.Build.Utilities.ToolTask.ExecuteTool(String pathToTool, String responseFileCommands, String commandLineCommands) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]    
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at TypeScript.Tasks.VsTsc.ExecuteTool(String pathToTool, String responseFileCommands, String commandLineCommands) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at Microsoft.Build.Utilities.ToolTask.Execute() [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]

Build FAILED.

/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003: The specified task executable "node" could not be run. System.ComponentModel.Win32Exception (2): No such file or directory [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at System.Diagnostics.Process.ForkAndExecProcess(String filename, String[] argv, String[] envp, String cwd, Boolean redirectStdin, Boolean redirectStdout, Boolean redirectStderr, Boolean 
setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, Int32& stdinFd, Int32& stdoutFd, Int32& stderrFd, Boolean usesTerminal, Boolean throwOnNoExec) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at System.Diagnostics.Process.Start() [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at Microsoft.Build.Utilities.ToolTask.ExecuteTool(String pathToTool, String responseFileCommands, String commandLineCommands) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]    
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at TypeScript.Tasks.VsTsc.ExecuteTool(String pathToTool, String responseFileCommands, String commandLineCommands) [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
/root/.nuget/packages/microsoft.typescript.msbuild/3.5.2/tools/Microsoft.TypeScript.targets(543,5): error MSB6003:    at Microsoft.Build.Utilities.ToolTask.Execute() [/src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj]
    0 Warning(s)
    1 Error(s)

Time Elapsed 00:00:03.96
The command '/bin/sh -c dotnet build "IdeaStudio.Web.Server.csproj" -c Release -o /app' returned a non-zero code: 1

user_6265620 · Answer

Your issue is related with the relative path. For COPY, first value is relative the current dockerfile path and the second parameter is relative to the WORKDIR in the docker container.

Try the dockerfile below:

    FROM mcr.microsoft.com/dotnet/core/aspnet:3.0-buster-slim AS base
    WORKDIR /app
    EXPOSE 80

    FROM mcr.microsoft.com/dotnet/core/sdk:3.0-buster AS build
    WORKDIR /src
    COPY ["src/IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj", "IdeaStudio.Web.Server/"]
    COPY ["src/IdeaStudio.Web.Client/IdeaStudio.Web.Client.csproj", "IdeaStudio.Web.Client/"]
    COPY ["src/IdeaStudio.Web.Shared/IdeaStudio.Web.Shared.csproj", "IdeaStudio.Web.Shared/"]
    RUN dotnet restore "IdeaStudio.Web.Server/IdeaStudio.Web.Server.csproj"
    COPY "src" .
    WORKDIR "/src/IdeaStudio.Web.Server"
    RUN dotnet build "IdeaStudio.Web.Server.csproj" -c Release -o /app

    FROM build AS publish
    RUN dotnet publish "IdeaStudio.Web.Server.csproj" -c Release -o /app

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

Publish an ASP.Net Core 3 preview 6 to Azure

Update 1

Update 2

1 Answers