sudo yum install -y git podman
git clone https://github.com/danpawlik/openwrt-builder
cd openwrt-builder
podman build -t openwrt-builder -f Dockerfile

Example

How to use:

mkdir -p openwrt-builder && chmod 0777 openwrt-builder
podman run --name openwrt -it -u user -v $(pwd)/openwrt-builder:/home/user/openwrt-builder:z,rw quay.io/dpawlik/openwrt:f38 bash

Then inside the container (from https://openwrt.org/docs/guide-developer/toolchain/use-buildsystem):

git clone https://git.openwrt.org/openwrt/openwrt.git ~/openwrt-builder/openwrt && cd ~/openwrt-builder/openwrt

Update the feeds:

./scripts/feeds update -a && ./scripts/feeds install -a

If you have own config file, replace it. For example:

# for AX3200
curl -SL https://raw.githubusercontent.com/danpawlik/openwrt-builder/master/configs/mediatek/mt7622/extended-full > ~/openwrt-builder/openwrt/.config
# or official
curl -SL https://downloads.openwrt.org/snapshots/targets/mediatek/mt7622/config.buildinfo > ~/openwrt-builder/openwrt/.config
# alternative configs
curl -SL https://raw.githubusercontent.com/danpawlik/openwrt-builder/master/configs/ramips/mt7621/extended-full > ~/openwrt-builder/openwrt/.config
curl -SL https://raw.githubusercontent.com/danpawlik/openwrt-builder/master/configs/qualcommax/ax3600/extended-full > ~/openwrt-builder/openwrt/.config

Configure the firmware image and the kernel:

make menuconfig

Then:

# make kernel_menuconfig
make -j$(nproc) kernel_menuconfig

Build the firmware image:

make -j $(nproc) defconfig download clean world

With Ansible

Install Ansible:

sudo dnf install -y ansible-core git

Clone builder project

git clone https://github.com/danpawlik/openwrt-builder && cd openwrt-builder

Run Ansible playbook

ansible-playbook -i ansible/inventory.yaml ansible/openwrt-build.yaml