I want to copy folder D:\test from my host OS (Windows) to my docker image.
My Docker file is D:\Programs>
Docker file
FROM mcr.microsoft.com/windows/servercore:ltsc2019
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
RUN mkdir root
RUN cd root
WORKDIR /root
RUN mkdir test
COPY D:/test to /root/test
#USING 'COPY' here instead of 'ADD' because of https://stackoverflow.com/questions/24958140/what-is-the-difference-between-the-copy-and-add-commands-in-a-dockerfile
From folder D:\Programs> I run command docker build . -t test
But I get error:
COPY failed: file not found in build context or excluded by .dockerignore: stat test: file does not exist
I tried commands COPY D:/test to /root/test and COPY ./test to /root/test
I know this error occurs because the path I copy from has to be relative from the build context (the . in docker build .). It cannot be an arbitrary path on the system outside of the build context.
I thought by using . I'd be in context D:\ from my build context D:\Programs>, but I guess not. What should my COPY command look like?
I checked here already:
https://forums.docker.com/t/copy-files-from-windows-host-to-ubuntu-container/28757
Dockerfile COPY from a Windows file system to a docker container
Dockerfile: Copy directory from Windows host to docker container
UPDATE 1
I placed the test folder in D:\Programs where my Dockerfile also resides, so I now have structure:
D:\Programs
\Test
Dockerfile
I then ran the build command again where I tried COPY test to /root/test and COPY ./test to /root/test, but both fail with the same aforementioned error.
I assume you've only added to in COPY D:/test to /root/test for abbreviation but I recommend checking that anyway.
If you really need what's in D:/Programs and can't move it to a folder inside the current build context there are two general options as I see it:
changing the build context - I'd suggest setting the build context as D:/ and adding every folder in the D:/ directory other than Programs to the .dockerignore file, then you can reference the Dockerfile from some subdirectory somewhere in D:/ and copy your files at build time as you wanted
creating a bind mount in runtime - you can map the D:/Programs directory to a folder inside the container (/my-programs) at runtime then copy the files from that folder to /root/test or just use the bind mount folder (/my-programs)
If in the future it will be available to use bind mounts in build time you'd be able to use the second option while creating the docker image
The only way I know how to do this is to change the dockerfile location during build, keeping the copied folder in context.
As below:
'test' folder located at D:/test
Set dockerfile COPY command as such:
COPY test /root/test
Say dockerfile is at D:/Programs/dockerfile
Navigate to D:/ in CLI
docker build -f ./Programs/dockerfile .
The . keeps the "test" folder in the build context. As far as I know, you cannot go to a parent directory etc. with docker build, so instead you want to stay in the parent folder and go down to the dockerfile.
If you run the docker build ... from D:\Programs that folder is the docker build context. All files used in the Dockerfile must be there.
d:\files is outside d:\programs, so it will be never be found.
You need to copy files content to the places where you run the command and you can use this copy line
COPY samplefile1.txt /root/test
i'm using logstash image and i have some ruby scripts that are located in the same directory as my dockerfile.
my goal is to create a script folder, and copy my scripts to it.
my problem is that when i access to the container instance, the folder is not created and no ruby file exist.
this is my dockerfile
FROM docker.elastic.co/logstash/logstash:${ELK_VERSION}
USER root
WORKDIR /usr/share/logstash
RUN mkdir scripts
COPY ./scripts/*.rb scripts
thanks in advance.
EDIT 1:
this is the files structure
I'm new here, so appreciate your patience with my question.
I have a container which has 5 folders with files that I want to modify via Visual Studio Code outside the container, not with Nano or any other editor in the container itself.
I've seen many recommendations to mount a volume. How can I go about trying that?
Map the host folder to a folder mounted in the image.
docker run -it -v /hostdir:/dockerdir 'imageName'.
Now you can put all the folders in dockerdir or mount them all and work on the files from outside the container.
I have a docker file that copies a file tree to the container using the command in the docker file:
COPY image /
Docker copies all the files BUT the .sh and .py etc files in the source folder ( on windows ) have execute permission turned on. When the container is run the copies present in the container DO NOT have execute permission turned on?
How do I deal with this other than explicitly chmod +x the files in the docker file when building the container (having to maintain a list of them etc) in this situation.
I do have an already build docker image and wan't to add files to it AFTER the build was done. Is there a way to add files without rebuilding it (or maybe to add it and save it with an new tag)? I did find docker cp but if I understand that right it does only work in running containers.
docker cp but if I understand that right it does only work in running containers
Still, that might work considering you can then commit a container into a new image.
See docker commit.
docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]