Dockerfile for image for building custom micropython builds

micropython_builder.dockerfile

FROM ubuntu:20.04

SHELL ["/bin/bash", "-c"]

ENV DEBIAN_FRONTEND=noninteractive

RUN 	apt-get update -y && \
		apt-get install -y \
		git wget flex bison gperf python3 python3-pip python3-setuptools python3.8-venv \
		cmake ninja-build ccache libffi-dev libssl-dev dfu-util && \
		rm -rf /var/lib/apt/lists/*

RUN 	update-alternatives --install /usr/bin/python python /usr/bin/python3 10
ENV PYTHON2=python
RUN 	pip3 install -I pyparsing==2.3.1 && \
		pip3 install pyserial && \
		pip3 install rshell

# install ESP IDF on the image - it will be performed only ocasionally, 
# when you want to use another version, you rebuild image
RUN git clone --recursive https://github.com/espressif/esp-idf.git /root/esp-idf && \
	cd /root/esp-idf && \
	git checkout v5.0.4 && \
	git submodule update --init --recursive && \
	./install.sh

ENV ESPIDF=/root/esp-idf
ENV MICROPY_DIR=/micropython

WORKDIR /root