Failed to build clangbuild docker about clang-builder

[mattgodbolt]

My apologies this has changed a little and I never explained how!

We build for both 20 and 22; and so one can provide a build-time parameter to choose the base image:

$ docker build --build-arg image=22.04 -t clangbuilder .

worked for me. Your change to the Dockerfile ought to be equivalent, and on a fresh new computer this worked for me. I will update the README.

Can you post the full output of your build and we can try and diagnose the problem?

[ChuanqiXu9]

Thanks for the update and the output in my local environment is:

$docker build --build-arg image=22.04 -t clangbuilder .
Sending build context to Docker daemon  95.26MB
Step 1 : ARG image
Please provide a source image with `from` prior to commit

It looks like my docker version is not good and it doesn't handle the argument --build-arg well.

My docker version is:

$docker --version
Docker version 20.10.6, build 370c289

So I would try to look at how to update my docker.

[mattgodbolt]

That's the same docker version as I haev...curious :(

[mattgodbolt]

This is what it looks like when I run locally:

mgodbolt-laptop:/t/clang-builder (main|✔) $ git status
On branch main
Your branch is up to date with 'origin/main'.

nothing to commit, working tree clean
mgodbolt-laptop:/t/clang-builder (main|✔) $ docker --version
Docker version 20.10.16, build aa7e414
mgodbolt-laptop:/t/clang-builder (main|✔) $ docker build --build-arg image=22.04 -t clangbuilder .
Sending build context to Docker daemon  270.8kB
Step 1/13 : ARG image
Step 2/13 : FROM ubuntu:${image}
 ---> 01f29b872827
Step 3/13 : LABEL MAINTAINER Matt Godbolt <[email protected]>
 ---> Using cache
 ---> edc037f4aae1
...and so on as it builds...

[mattgodbolt]

how are you launching docker - what is $docker ? is it a script of some sort? or is the $ your prompt?

[mattgodbolt]

From your build:

Sending build context to Docker daemon 95.26MB

This is also very suspicious - there isn't 95MB of data in the repository...I can't imagine what's going on

[ChuanqiXu9]

how are you launching docker - what is $docker ? is it a script of some sort? or is the $ your prompt?

Yeah, the $ marker is the start of the command line. (Maybe the prompt in your words).

This is also very suspicious - there isn't 95MB of data in the repository... I can't imagine what's going on

Yeah, I guess there may be some troubles in my local settings. Since I make it after I change to a brand new machine. I guess it may not make sense to require the docker users to handle such issues. So I'd like to close the issue. Thanks!