Remove Dockerfile, using zmkfirmware/zephyr-west-action now instead.

Dockerfile

@@ -1,57 +0,0 @@
-FROM debian:stable-slim
-
-RUN apt-get -y update && \
-	apt-get -y upgrade && \
-	apt-get install --no-install-recommends -y \
-	wget \
-	ca-certificates \
-	autoconf \
-	automake \
-	build-essential \
-	ccache \
-	device-tree-compiler \
-	dfu-util \
-	file \
-	g++ \
-	gcc \
-	gcc-multilib \
-	git \
-	iproute2 \
-	libpcap-dev \
-	libtool \
-	make \
-	ninja-build \
-	python3-dev \
-	python3-pip \
-	python3-setuptools \
-	xz-utils && \
-	rm -rf /var/lib/apt/lists/*
-
-ARG ZSDK_VERSION=0.11.2
-RUN wget -q "https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v${ZSDK_VERSION}/zephyr-toolchain-arm-${ZSDK_VERSION}-setup.run" && \
-	sh "zephyr-toolchain-arm-${ZSDK_VERSION}-setup.run" --quiet -- -d /opt/toolchains/zephyr-sdk-${ZSDK_VERSION} && \
-	rm "zephyr-toolchain-arm-${ZSDK_VERSION}-setup.run"
-
-ARG CMAKE_VERSION=3.16.2
-RUN wget -q https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-Linux-x86_64.sh && \
-	chmod +x cmake-${CMAKE_VERSION}-Linux-x86_64.sh && \
-	./cmake-${CMAKE_VERSION}-Linux-x86_64.sh --skip-license --prefix=/usr/local && \
-	rm -f ./cmake-${CMAKE_VERSION}-Linux-x86_64.sh
-
-ENV DEBIAN_FRONTEND noninteractive
-
-RUN wget -q https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements.txt && \
-	wget -q https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements-base.txt && \
-	wget -q https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements-build-test.txt && \
-	wget -q https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements-doc.txt && \
-	wget -q https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements-run-test.txt && \
-	wget -q https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements-extras.txt && \
-	pip3 install wheel && \
-	pip3 install -r requirements.txt && \
-	pip3 install west && \
-	pip3 install sh
-
-ENV ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-ENV ZEPHYR_SDK_INSTALL_DIR=/opt/toolchains/zephyr-sdk-${ZSDK_VERSION}
-
-CMD ["/bin/bash"]