I have a project that need to mount a single directory into the docker container, and I mount it in a similar way
agent:
image: agent:latest
container_name: agent
volumes:
- $PWD/status.txt:/status.txt
Is A Directory error occurs when I modify status.txt in open mode.
with open('status.txt','a') as f:
...
...
docker-compose seems to recognize files as directories.
I would appreciate it if you could tell me how to solve it?
I can mount files just fine using the same syntax, although I use a relative path, e.g.:
volumes:
- ./sourcedir/file.txt:/target/dir/mountedfile.txt
Where mountedfile.txt is essentially file.txt. There must be something else in your environment causing this issue. To troubleshoot, there are a couple of things you could do, including:
Get a shell into the container and run stat on the target file, e.g. stat mountedfile.txt. That should tell you if it's a file or directory.
Test your configuration manually with plain docker using -v to mount the volumes, e.g.:
docker run --rm -ti -v /sourcedir/file.txt:/target/mountedfile.txt ubuntu:latest bash
Also, there may be some useful information in a (somewhat) unrelated answer.