dev.Dockerfile: add CGO_ENABLED build arg

[ZZiigguurraatt]

Allow defining the CGO_ENABLED variable so we can build development binaries that will work in a different type of container.

[gemini-code-assist]

Summary of Changes

Hello @ZZiigguurraatt, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the development build process by introducing a new configurable argument in the Dockerfile. This change provides greater flexibility in compiling development binaries, ensuring they can operate correctly across different container setups.

Highlights

• dev.Dockerfile Modification: Added the CGO_ENABLED build argument to dev.Dockerfile, which enables the creation of development binaries compatible with various container environments.

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[gemini-code-assist]

Code Review

This pull request adds a CGO_ENABLED build argument to dev.Dockerfile to allow for more flexible development builds. However, the new argument is declared but not actually used in the build process, making the change ineffective as is. My review points out this issue and suggests providing a default value for the argument, while also explaining that it needs to be passed to the make commands to have an effect on the Go build.

[lightninglabs-deploy]

@ZZiigguurraatt, remember to re-request review from reviewers when ready

[ZZiigguurraatt]

Set ARG CGO_ENABLED=1, rebased, and force-pushed.

I still don't agree with #1142 (comment).

[ellemouton]

lgtm!