Thanks @ThorGroup for RedPill, and @haydibe for simple way to create image for bootloader with Docker.
A little instruction how to use last version toolchain in macOS Big Sur 11.5.2 :
1. Install Xcode, Xcode command line tools, and Docker on Mac. Run Docker. Download last version toolchain, moved to Desktop and unzip.
2. Install HomeBrew in Terminal
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
3. Instal jq and coreutils in Terminal
brew install jq
brew install coreutils
4.
cd ~/Desktop/redpill-tool-chain_x86_64_v0.6
sudo chmod 777 redpill_tool_chain.sh
5. In Finder rewrite config in bromolow_user_config.json or apollolake_user_config.json for your setup.
6. After choosing config use the commands for:
build toolchain image
./redpill_tool_chain.sh build bromolow-6.2.4-25556
./redpill_tool_chain.sh build bromolow-7.0-41222
./redpill_tool_chain.sh build apollolake-6.2.4-25556
./redpill_tool_chain.sh build apollolake-7.0-41890
create redpill bootloader image
./redpill_tool_chain.sh auto bromolow-6.2.4-25556
./redpill_tool_chain.sh auto bromolow-7.0-41222
./redpill_tool_chain.sh auto apollolake-6.2.4-25556
./redpill_tool_chain.sh auto apollolake-7.0-41890