CODEX_DOCKER_IMAGE_NAME=codex-linux-dev
docker build --platform=linux/amd64 -t "$CODEX_DOCKER_IMAGE_NAME" ./.devcontainer
docker run --platform=linux/amd64 --rm -it -v "$PWD":/app -w /app "$CODEX_DOCKER_IMAGE_NAME"

For arm64, specify linux/arm64 instead.

Currently, the Dockerfile does not specify x64 vs. arm64, though you need to run rustup target add x86_64-unknown-linux-musl yourself to install the musl toolchain for x64.

VS Code

If you open the workspace in a devcontainer in VS Code, in the terminal, you can build either flavor of the arm64 build (GNU or musl):

cargo build --target aarch64-unknown-linux-musl
cargo build --target aarch64-unknown-linux-gnu