docker-build.sh

#!/bin/bash
set -euo pipefail

source /emsdk/emsdk_env.sh

SRC_DIR="/app/micropython/ports/webassembly"
BUILD_DIR="$SRC_DIR/build-standard"
OUT_DIR="/app/micropython-build"

if [ ! -d "$SRC_DIR" ]; then
  echo "error: $SRC_DIR not found." >&2
  echo "Did you run 'git submodule update --init --recursive' on the host," >&2
  echo "and mount the repo with -v \"\$(pwd)\":/app ?" >&2
  exit 1
fi

cd "$SRC_DIR"
make

if [ ! -d "$BUILD_DIR" ]; then
  echo "error: expected build output at $BUILD_DIR but it doesn't exist." >&2
  echo "MicroPython may have renamed its build directory - check the 'make' output above." >&2
  exit 1
fi

rm -rf "$OUT_DIR"
mkdir -p "$OUT_DIR"
cp -r "$BUILD_DIR/." "$OUT_DIR/"

echo "Done. Output copied to micropython-build/ (same location the GitHub Action writes to)."