Mount current directory, then CD to the working directory

[marstaik]

Currently the docker image mounts the provided working directory. However, when building extensions that require parent hierarchies, this doesn't work.

Consider this example

api/ruby/
  Gemfile
  Cargo.toml
packages/core/
  Cargo.toml
Cargo.toml

The ruby gem's Cargo.toml requires the relative ../../packages/core/Cargo.toml to complete building. For the bundler to execute, you would pass the -directory (or from the actions working_directory argument) as api/ruby. However, this currently only results in the working_directory folder being mounted, making it so the build cannot complete.

I believe the most logical approach is to mount the current directory, and then change directories.

[mkdynamic]

Bisecting versions, this broke building for me. I'm not sure why.

With no other changes, running bundle exec rake "native[arm64-darwin]" on 0.9.91 works. And fails on 0.9.92 with the following error:

$ bundle exec rake "native[arm64-darwin]"

🐳 Running default build command (rake native:arm64-darwin gem)
🔍 Running command:
    $ /users/mark/.docker/bin/docker run --platform linux/amd64 -v $(pwd):$(pwd) ...

rake aborted!
No Rakefile found (looking for: rakefile, Rakefile, rakefile.rb, Rakefile.rb)

(See full trace by running task with --trace)
rake aborted!
Command failed with status (1): [bundle exec rb-sys-dock --platform arm64-darwin --build --verbose]
/users/mark/monorepo/libs/mail_auth/Rakefile:16:in block in <top (required)>'

...

My project is a monorepo, with a layout like this:

monorepo/
  .git/
  libs/
    mail_auth/
      Rakefile
      ...

On MacOS arm64.

Any clues?

mount the current directory, and then change directories

Where does it actually cd?