Add Dockerfile with a working build environment on container

docker-builder/Dockerfile

@@ -0,0 +1,78 @@
+FROM ubuntu:22.04 as base
+WORKDIR /workdir
+
+ARG sdk_nrf_branch=v2.6.1
+ARG toolchain_version=v2.6.1
+ARG sdk_nrf_commit
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+SHELL [ "/bin/bash", "-euxo", "pipefail", "-c" ]
+
+# Install dependencies
+RUN <<EOT
+    apt-get -y update
+    apt-get -y upgrade
+    apt-get -y install wget unzip clang-format make libffi7 git
+    apt-get -y clean
+    rm -rf /var/lib/apt/lists/*
+EOT
+
+# Install Go 1.22
+RUN <<EOT
+    wget https://go.dev/dl/go1.22.5.linux-amd64.tar.gz
+    tar -C /usr/local -xzf go1.22.5.linux-amd64.tar.gz
+    ln -s /usr/local/go/bin/go /usr/local/bin/go
+    ln -s /usr/local/go/bin/gofmt /usr/local/bin/gofmt
+    rm go1.22.5.linux-amd64.tar.gz
+EOT
+
+# Install toolchain
+# Make nrfutil install in a shared location, because when used with GitHub
+# Actions, the image will be launched with the home dir mounted from the local
+# checkout.
+ENV NRFUTIL_HOME=/usr/local/share/nrfutil
+RUN <<EOT
+    wget -q https://developer.nordicsemi.com/.pc-tools/nrfutil/x64-linux/nrfutil
+    mv nrfutil /usr/local/bin
+    chmod +x /usr/local/bin/nrfutil
+    nrfutil install toolchain-manager
+    nrfutil install toolchain-manager search
+    nrfutil toolchain-manager install --ncs-version ${toolchain_version}
+    nrfutil toolchain-manager list
+    rm -f /root/ncs/downloads/*
+EOT
+
+#
+# ClangFormat
+#
+RUN <<EOT
+    wget -qO- https://raw.githubusercontent.com/nrfconnect/sdk-nrf/${sdk_nrf_branch}/.clang-format > /workdir/.clang-format
+EOT
+
+# Prepare image with a ready to use build environment
+SHELL ["nrfutil","toolchain-manager","launch","/bin/bash","--","-c"]
+RUN <<EOT
+    west init -m https://github.com/nrfconnect/sdk-nrf --mr ${sdk_nrf_branch} .
+    if [[ $sdk_nrf_commit =~ "^[a-fA-F0-9]{32}$" ]]; then
+        git checkout ${sdk_nrf_commit};
+    fi
+    west update --narrow -o=--depth=1
+EOT
+
+ARG zigbee_home_version=develop
+
+# Zigbee_Home
+RUN <<EOT
+  git clone --branch ${zigbee_home_version} https://github.com/ffenix113/zigbee_home.git /workdir/zigbee_home
+  cd /workdir/zigbee_home
+  go build -o zigbee_home cmd/zigbee/main.go
+  mv zigbee_home /usr/local/bin
+EOT
+
+ENV ZEPHYR_BASE=/workdir/zephyr
+
+# Launch into build environment with the passed arguments
+# Currently this is not supported in GitHub Actions
+# See https://github.com/actions/runner/issues/1964
+ENTRYPOINT [ "nrfutil", "toolchain-manager", "launch", "--shell"]