When building with fly deploy --build-only, the Docker build steps don’t display the full output, i.e. when I put RUN echo "hello world" in my Dockerfile, I don’t see hello world.
What I tried:
- Adding
--verbose to fly deploy didn’t help
- With plain Docker this can supposedly be fixed with the
--progress plain option, but I don’t know how to pass this to fly deploy
- Buildkit has an environmental variable
BUILDKIT_PROGRESS=plain, but when I use --build-arg BUILDKIT_PROGRESS=plain, I still don’t see full build output.
How do I display the full build output with Fly?
Hi @multi-party-8731, I think if you set NO_COLOR=1 before running fly deploy, you’ll get plain (and, incidentally, monochrome) Docker build output.
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Thanks! That helps. Would be good to include this in the documentation, preferably with a better name, or combined with --verbose.
Debugging the build output is a very common and early need (while disabling color is not), and how to do it isn’t discoverable, except via this thread now.
Has this changed? I’m not able to trigger --progress plain behaviour with NO_COLOR=1
I’m also running into this, and NO_COLOR=1 doesn’t help. --progress plain would be helpful and match other tools that wrap docker build.