Core: COPY failed: stat /var/lib/docker/tmp/docker-builder549405077/WebApplication1/WebApplication1.csproj: no such file or directory

[sanjeev02saraswat]

Issue Title

COPY failed: stat /var/lib/docker/tmp/docker-builder549405077/WebApplication1/WebApplication1.csproj: no such file or directory

General

I have created one simple .net core web app and created docker file for the same.Below is the docker file content:

**FROM microsoft/dotnet:2.2-aspnetcore-runtime AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443

FROM microsoft/dotnet:2.2-sdk AS build
WORKDIR /src
COPY ["WebApplication1/WebApplication1.csproj", "WebApplication1/"]
RUN dotnet restore "WebApplication1/WebApplication1.csproj"
COPY . .
WORKDIR "/src/WebApplication1"
RUN dotnet build "WebApplication1.csproj" -c Release -o /app

FROM build AS publish
RUN dotnet publish "WebApplication1.csproj" -c Release -o /app

FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "WebApplication1.dll"]**

I have run command: docker build -t webapp -f Dockerfile . for creating docker image.

[scalablecory]

CC @shirhatti @MichaelSimons

[vasilymarchenko]

I faced the same issue and fixed it.
Just replace COPY ["WebApplication1/WebApplication1.csproj", "WebApplication1/"]
with COPY . WebApp1/
@sanjeev02saraswat

[MichaelSimons]

@sanjeev02saraswat, it looks like the reason COPY is failing is because the source path does not exist in your Docker build context. Your docker build command is passing in c:\users\sanjeev.x.sarasat\source\repos\WebApplication1\WebApplication1 as the build context directory which is the last parameter (e.g. .). To get this to work correctly you will either need to change your build context directory to c:\users\sanjeev.x.sarasat\source\repos\WebApplication1 or change the COPY source path to WebApplication1.csproj.

[alihangokdemir]

@sanjeev02saraswat, I suggest you to cd C:\Users\sanjeev.x.saraswat\source\repos\WebApplication1 and then type docker build -f WebApplication1/DockerFile -t webapp . (make sure docker file in this directory C:\Users\sanjeev.x.saraswat\source\repos\WebApplication1\WebApplication1)

[orassr]

@sanjeev02saraswat, I suggest you to cd C:\Users\sanjeev.x.saraswat\source\repos\WebApplication1 and then type docker build -f WebApplication1/DockerFile -t webapp . (make sure docker file in this directory C:\Users\sanjeev.x.saraswat\source\repos\WebApplication1\WebApplication1)

That worked for me, thank you so much!
docker build -f AppName/DockerFile -t webapp .

[TadejTastro]

I had to use the following command to start the build:

docker build .

[kwameg-a]

Doing this: docker build -f Dockerfile .. should resolve the issue.
Reference: https://docs.microsoft.com/en-us/visualstudio/containers/container-build?view=vs-2019#building-from-the-command-line

[Oleg26Dev]

I have VS 2019 Solution with 2 projects: P1 (Standard lib) & P2 (ASP.NET Core exe).
P2 contains a Dockerfile.
I have copied the Docker file to up folder, tried to build the docker running the cmd :

docker build -f Dockerfile ..
Sending build context to Docker daemon 3.056GB
Step 1/18 : FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
---> 5d7a95ed1660
Step 2/18 : WORKDIR /app
---> Using cache
---> 6e8271ae3df9
Step 3/18 : EXPOSE 80
---> Using cache
---> e45066aa184b
Step 4/18 : EXPOSE 443
---> Using cache
---> 0bbce5ed4c30
Step 5/18 : FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
---> 925a86b607a3
Step 6/18 : WORKDIR /src
---> Using cache
---> e4af901c8e34
Step 7/18 : COPY ["PropMan/PropMan.csproj", "PropMan/"]
COPY failed: stat /var/lib/docker/tmp/docker-builder808977273/PropMan/PropMan.csproj: no such file or directory
PS D:\MyProjects\PM2020\PMan>

How to fix it?

[kvishalv]

I have VS 2019 Solution with 2 projects: P1 (Standard lib) & P2 (ASP.NET Core exe).
P2 contains a Dockerfile.
I have copied the Docker file to up folder, tried to build the docker running the cmd :

docker build -f Dockerfile ..
Sending build context to Docker daemon 3.056GB
Step 1/18 : FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
---> 5d7a95ed1660
Step 2/18 : WORKDIR /app
---> Using cache
---> 6e8271ae3df9
Step 3/18 : EXPOSE 80
---> Using cache
---> e45066aa184b
Step 4/18 : EXPOSE 443
---> Using cache
---> 0bbce5ed4c30
Step 5/18 : FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
---> 925a86b607a3
Step 6/18 : WORKDIR /src
---> Using cache
---> e4af901c8e34
Step 7/18 : COPY ["PropMan/PropMan.csproj", "PropMan/"]
COPY failed: stat /var/lib/docker/tmp/docker-builder808977273/PropMan/PropMan.csproj: no such file or directory
PS D:\MyProjects\PM2020\PMan>

How to fix it?

tried @kwameg-a suggestion and that worked for me.
docker build -t webapi -f Dockerfile ..