Hidden files excluded from devcontainer Docker build context about cli HOT 3 CLOSED

We use the docker CLI for building the image. It appears .* is excluded by default, see https://docs.docker.com/engine/reference/builder/#dockerignore-file. Maybe having a .dockerignore file with !.* would revert that default?

from cli.

Hi @chrmarti, I don't see that rule mentioned in the docs. Are you talking about the warning at the end, where it says "For historical reasons, the pattern . is ignored."? I took that to mean that . is ignored, not .*. I suppose this could be easily tested by running docker build manually and seeing if it copies hidden files. I'll get to that today when I have time. If that is the Docker default, I suppose there's no sense fighting it; it might just be worth a call out in the docs, with one of the workarounds that I mentioned above.

from cli.

Hey @chrmarti, sorry for not getting back sooner. Turns out I just wasn't using ls -a when I listed files in my container. 🤦‍♂️ When building a devcontainer as described above or just building an image with docker build, I can confirm that hidden files are being copied. I feel pretty sheepish. Gonna close this issue now and hope nobody ever googles it. 😅

from cli.