Setup:

mkdir -p bin dl
touch .config

chown -R 1000:1000 bin dl .config

docker compose up -d


Making changes:

Configure OpenWrt:
docker compose exec -it openwrt-builder make menuconfig
Download target source files:
docker compose exec -it openwrt-builder make -j$(nproc) download
Compile firmware:
docker compose exec -it openwrt-builder make -j$(nproc) V=s